Yuil M-03-1 Korean Rigid Transport Handcuffs (Pretty good security)

This is an interesting pair of Yuil M-03-1 Transport Handcuffs, made in Korea. South Korea to be specific (not the crazy North Korea!) These are the connection ring version of the M-03 model. The purpose of the ring is to create a chain gang environment for prisoner transport so one chain can run through all the cuffs to link the prisoners together. Alternatively it can allow them to be connected to leg irons. However this steel ring can be pressed down when not needed to allow normal grip and application of the handcuffs.

The gap between the wrists is larger and it makes accessing the key holes more difficult. They have a 2 pawl system, though mainly normal keys are able to open the handcuffs.

An interesting aspect of these is they are actually chain link handcuffs, using one very elongated welded chain. The plastic is then bolted on afterwards to provide rigidity from twisting, thus becoming rigid handcuffs. Though if the keyholes are facing out, someone could use a screw driver to undo the screws (normal cross-head screws, nothing fancy) and they could remove the plastic and they would become chain link handcuffs with a larger one single link, which would let people have twisting capability. You can see this in the image I took of them after I disassembled them: https://i.imgur.com/IvNb7XQ.jpg

Over all they are good handcuffs and worthy of being in my collection. It would have been nice if they would have used more secure screws, instead of the regular Philips type. But I do like them. Handcuffs like these should ideally not be applied where the keyholes are facing the hands because they can fiddle with the locks as much as any screws too.

🚨🔗 Model 1K70 Chubb Detainer British Prison High Security Chain Handcuffs [NIJ]

These came from the YouTuber called CoxysPicks who has a nice lock picking channel, covering various styles of locks including handcuffs. Check his channel out there!

These Chubb Detainer or Detainee handcuffs are used in British Prisons. They are model 1K70 and were created with 3 different key bittings depending on their usage location. I have the standard key bitting model. They may be phased out in favour of the TCH HSH1 but it is very possible these are still in use.

They use a very good security proper 3 lever Chubb lock which is hard to pick and round chain links that make binding and snapping attacks less likely. They feature both key and switch operated double locking mechanisms and all in all are high security. Normal handcuffs are relatively easy to pick with rudimentary improvised tools, and since these cannot be easily picked, that would explain why they were/are used by the prison service either internally in the prison or during transport between locations (such as between other prisons or court appearances etc.

They are reasonably comfortable and not too heavy but they are quite bulky.

Really nice handcuffs, with a robust and known secure locking mechanism. They can be picked if you know what you are doing and have the tools, but if you know how to pick normal handcuffs, you will never.... ever... pick these with that knowledge!

If you are interested in seeing these picked or opened without a key, check out CoxysPicks youtube channel.


🚨🔗 ASP Model 100 Chain Handcuffs 1 Pawl & Polymer exterior for strength and lightweight [NIJ]

These are the older ASP handcuffs, model 100. They have a stainless steel bow and the body of the cuffs has a steel skeleton with an ordnance grade polymer over-molded to ensure weight savings while providing the needed security and strength. These have 1 pawl, indicated by the yellow double lock window. This is the standard model of security mechanism used. It's ok, but I personally think in this day and age, all handcuffs should at least have 3 pawls for added security. It wouldn't need any new keys but would add a bit more protection from picking, essentially for free.

These, like all ASP cuffs I have seen, are more bulky than "standard" metal handcuffs. But they are a little bit lighter (they made an aluminum / aluminium bow version too, the model 150) and have good features like being able to adjust the cuffs tightness using the key and quickly double lock again instead of having to take the key out and activating it separately.

The downside of them being less dense than all-steel construction, is they can bend. If an officer falls over onto his cuffs during an altercation with a suspect, the double strand (the part I squeezed in the video) could get crimed closer together, preventing the handcuffs from being used properly until a second set of cuffs could be acquired to bend them apart again. This is what lead to the newer models with a fully forged aluminium body with no polymer in sight on the exterior.

These are still good cuffs. My pair are ex-police and have the serial and model numbers ground off (a nice job the seller did of it too). I had to disassemble them and give them a good cleaning to remove little rust spots and bits of dirt. Then I gave them a bit of lubricant and they were good as new... well you know what I mean :D

I know these are the steel bow, single pawl version and my model 450 are aluminium bow high security two pawl version, but if you would like a physical comparison video where I show them side by side and look at the differences, please comment and I will consider making a video on them both together.


New! ASP Forged Aluminum Ultra Handcuffs Model 450 HIGH SECURITY KEY [NIJ]

New! ASP Forged Aluminum Ultra Handcuffs Model 450 HIGH SECURITY KEY [NIJ]

These are the newer ASP Ultra Cuff in Forged Aluminum (or Aluminium in the UK) with high security blue locking mechanism.

These handcuffs require a special key which has a split in it. However you can modify existing keys by using a hacksaw to put a thin split in the bit, if you are careful. This mechanism makes them very hard to pick open without having a key.

You only get 1 key with them....... Normal keys will NOT work in these handcuffs!

They are very light weight, about 205g but are very strong.

The locking mechanisms can be removed and replaced depending on the need (change of level of security or repair etc)

They are way more rugged than the older thinner more bendy polymer coated versions.

They are comfortable and offer an arresting officer/security the ability to quickly disengage the double lock, undo the cuffs to adjust them and quickly double lock again using the key in the keyway, instead of having to remove the key and activate the slot to double lock. Which is a nice addition.

I highly can recommend this pair of ASP cuffs. They are a very worthy new design and are NIJ certified.


Russian Czech Style BRS-2 Chain link Handcuffs

These Russian Czech Style BRS-2 Chain link Handcuffs use the special mechanism that Ralkem handcuffs use. In fact the key is the same, in terms of functionality. They are very smooth in operation, have double locking and ditched jaws for strength.

They also have a security feature where the part in the lock which needs to be lined up perfectly to be able to fit a key, or tools, into the keyway, it turns at random as the handcuffs are closing, to make them more secure.

A nice pair of handcuffs.

Shomer-Tec Clear Cuff Functional Training Handcuff

This is the Shomer-Tec Clear Cuff. It is a transparent training handcuff to show the inner workings of how handcuffs work. It also helps aid in teaching how to pick handcuffs.

This is the classic 1 pawl bar design, so best replicates American handcuffs. Picking 2 or 3 pawl cuffs (like British police handcuffs by TCH or Hiatt) is not as easy as this because you need to lift all bars at the same time. But it is a good visual aid to help the process of teaching it.

Great for people in the #Locksport community to teach #LockPicking. There's bad guys out there using handcuffs on people too, so knowing about picking handcuffs is a nice thing to be aware of. Escaping handcuffs that a criminal puts you in is NOT a bad thing. Never attempt to escape from actual police else you'll be in a world of trouble.

USA Peerless 700CTC-32 Transport & Court Room Chains [NIJ]

Not a typical Item I'd buy, but I asked the seller for deals and got one on these. So, here's something a bit different for you today. I'm sure you'll find the contrast between these and basic handcuffs interesting.

I was asked why it sometimes takes some time between video releases... Stay tuned and subscribe! This channel is an off-chute of my lockpicking hobby. But fear not! Whenever I get liquid funds that aren't earmarked for anything else more important to me, that's when I go looking for new cuffs to overview on this channel. Very often I re-sell cuffs etc in order to more quickly make funds to buy other ones. So in the future when the market is right, I can for example re-sell these transport chains and possibly have enough to almost buy 2 pairs of cuffs! This method makes it easier for me to purchase sooner, but only when the market is right and when I am in the mood to go buying packaging materials and making listings etc.. So please subscribe and be patient :) More videos will come! Enjoy this overview & demo of the "Peerless 700CTC-32 - Dual Restraint" (which is the official model designation).

These are used for prisoners in court, during transport to different prisons and can be seen in the news, in TV shows and in the movies. These are used because they restrict the capability of hands and legs better than individual leg irons and cuffs, but they also provide better visibility since there is a chain which goes vertically from the hands down to the feet. They also prevent prisoners from changing clothes while they are restrained using transport chains like these.

There is a wider gap between the handcuffs on these than there are with the regular Peerless handcuffs. Normally there's only 2 chain links, but these have 2 links on the left, 2 links on the right and a round larger link connecting them both to each other and the central vertical chain which links to the legirons in a similar way.

Smith & Wesson M1-1 Oversized Handcuffs [NIJ]

These are oversized Smith & Wesson handcuffs. Model 1-1. They accommodate a larger wrist size and also close smaller than average.

They sometimes require a more special larger case to fit them.

They have a pin-push double locking mechanism instead of the usual window slot one.

These are the more modern version which are riveted together and more capable of defending against being prised apart by seat belt buckles etc.

British TCH HSH1 Maximum Security Hinged Transport Handcuffs

This is the high security or maximum security HSH1 handcuffs from TCH or Total Control Handcuffs. Cylinder lock for double locking.

The same as the Hiatt HSS-9 model, these are truly high security. They use the same standard single lock key as most other handcuffs, but the double lock is operated with a separate wafer lock key. As shown you can operate the handcuffs fully while wearing them in the way I have shown, although trying to pick the wafer lock open without having the key will likely prove totally fruitless.

As I understand it, these handcuffs are only used mainly for transport of maximum risk prisoners, the kind of prisoners that have a high probability of being an imminent threat to the public if they were to escape.

They have the usual 3 pawl bars and high over all quality, fit and finish. The differences are the double lock being operated by a separate key type and the backloading is only 1 click, as the pawl teeth are all uniform, rather than being staggered depths as on their normal models. So to double lock you have to give it a good slap from the inside to double lock.

From http://www.thehandcuffshop.com

Kombat Chain Link Professional Cheap Yet Decent Handcuffs

These are some cheap Kombat handcuffs from eBay in the UK. They are made in Taiwan and likely a generic brand, sold under the Kombat brand name. They cost me about £11 delivered and are surprisingly good for what you are paying for.

They have 2 pawl bars, which is good and unexpected for cheap cuffs in most cases. Although the internal mechanism leaves picking them open easy due to the positioning of the ledge inside where the key meets.

They are pretty smooth in operation, the rotating arms are aligned nicely and don't bash into the sides of the cuff and they are of a riveted construction so they are pretty sturdy. Normal handcuff keys (such as Peerless keys) do not fit (they won't turn) because the internal depth space is not tall enough to accommodate tall keys, so if you have other cuff keys, you may need to file the bottom of the key a bit to shorten the height of the bit on the end.

Over all they are quite nice and a decent pair to give to responsible kids, for bedroom use etc. Although the packaging marketing states they are designed for official police use, they are not specifically independently rated for official police use, so I would not recommend them for police or even security use. I suppose you could use them for security use as long as you're able to use what ever cuffs you want to, but the fact that typical cuff keys do not fit and there's no ditched jaws meaning a very strong person could bend the double strand and disengage the rotating arm's teeth from the pawl's teeth, I would not recommend it.

All in all, a cheap decent enough pair of cuffs for young or adult play, learning lock picking, home defence, bug out bags etc of cost is an issue. If you want a really good pair (in the UK), a pair of TCH model 800 would cost you under £30 and then you'd have exceptional quality and secure cuffs.

Blueline by Kel-Met Polish Rigid NATO Police Handcuffs (Improved backloading)

This is the new and improved Kel-Met rigid handcuff, known as model KM 2000. This is a rebrand called BlueLine, which still has Kel-Met stamped on them as well. Made in Poland. Not related to the Chinese "Blueline" brand I overviewed a while back.

The original backloading had an issue where the last 3 clicks could be mistaken for normal handcuff size positions and in this case double locking was non-functional despite being engaged. So after contacting Kel-Met about this, a month later I received the improved model.

It is a rigid handcuff, similarly sized and shaped as British TCH 840 handcuffs. The keyway orientation is different from that of TCH, in that it is sideways similarly how Peerless and Alcyon handcuffs are.

These handcuffs are rigid when left assembled but if you disassemble the plastic grip cover, the two cuffs are capable of swivelling around in place, while staying rigidly connected.

(If you would like to see what these look like when the grip is removed, leave me a comment and when I get time I might make a video.)

These are made of stainless steel, so cause less or maybe even no allergic reactions on the skin. They are strong and seemingly have no need of ditched jaws, according to Kel-Met. There is a visual outline of the ditches but there is no peg or protrusion that fits inside them.

This is a much improved model in my opinion to the prior model, although I feel there is room for further improvement in that at present only the last click is not safely usable due to not being double locking capable. I have heard this is a somewhat common issue with various basic-backloading handcuffs. But I would like to see this get resolved and maybe improve tolerances on the mechanism so that when double locked the pawl bars are more firmly in place and unable to move.

All this said, I would say this new revised model is a worthwhile handcuff and I would be much happier using this model in a professional context than their original one.

Hiatts 1960 Old British Police Handcuffs (No key :S but I still demoed them for you))

These Hiatts 1960 handcuffs are Britain's first swing-through cuffs issued to the police.

Prior to these handcuffs, the British police were mainly using the old "irons" type of handcuffs from way back in the day. These Hiatts 1960 used a round key that is entirely different from today's handcuffs.

They are surprisingly good, for how old they are. They are swing-through, they have 2 pawl bars making picking more difficult and they have a double locking mechanism for safety. While picking the double lock is very easy, getting them unlocked is a bit more of a challenge haha but after a few minutes of trying various items I was able to undo them. Knowing basically how they work, I will be making a key for them eventually.

The tolerances seem very sloppy on the inside, meaning things move around and what not, but that also made it more difficult to open than I was expecting.

Over all, they are very good handcuffs for their age and paved the way to get the British Police familiar with swing-through handcuffs prior to getting the more modern design you are used to seeing.

Brifield C2 High Security Handcuffs [NIJ] 3 Separated Pawls, Special Keys!

These are a pair of light weight High Security handcuffs from Brifield model C2. They are good & secure but quality control could be better. From Amazon UK.

These have 3 pawl bars which are separated, in the same way the old Yuil handcuffs used to have 2 separated pawls. This means you must use their special key which is a 3-bitted key. You get 2 keys with each pair of cuffs.

The keys are all solid, unlike most handcuff keys which are hollow. There is no keypost in these, so the keyway goes through both sides to allow key usage from either side.

One side did back-load but this is either a defect which made it happen on one cuff when it is not a feature, or a defect causing one side to not backload.

The edges are not smooth and are a bit uncomfortable, similar to a pair of Alcyon I had a while back.

One thing I pointed out (I pointed downwards) was about the anti-shim protection. If you recall, Yuil handcuffs have two little flaps which are folded over to catch even special split pawls. In these Brifield handcuffs those flaps exist also but are standing up and not folded over, so the way they come from the manufacturer they are useless at adding any extra protection. Maybe they could be bent over by the buyer but I have not done this in case there are issues which made them not do this on purpose.

Over all, I like them, but the quality issues in my case would be a problem for me if I were to desire to use them in a professional setting. They are likely Chinese since I have seen similar models on Chinese marketplace websites. In fact I have since confirmed with the seller that they are Chinese police handcuffs.

They are made with aluminium, so do not lubricate with graphite because graphite and aluminium do not mix well.

Comparing Quality & Security of The cheapest handcuffs In 3 Quality Brackets

A video comparing quality and security of the cheapest handcuffs I could get in 3 different brackets, ranging from garbage, ok, good.

The first black pair of garbage single locking metal "toy" handcuffs cost about £4.

The second pair, the pink ones, are of medium/ok quality and cost about £9.

The last black pair are GOOD quality, genuine Spanish police handcuffs and cost about £23

The first handcuffs are single locking only, which makes them unsafe, even for children because if someone falls over while wearing them, their wrists could get crushed when the handcuffs get tighter immediately. Plus the metal is thin and would cut into them easier than thicker handcuffs. Also as far as security, the chain link swivels are total trash and the chain links are not welded so could be pulled open with some average adult strength.

The grade that the pink handcuffs came in was, I would say decent. They are double locking, although the double lock is not as definitive when engaging as many other better models of handcuffs. The metal is thicker and I was unable to bend the double strand with my fingers, which is good. Although there are no ditches in the rotating arm. The purpose of ditched "jaws" (as they are referred to) is to ensure that someone who is very strong, cannot pull outwards and pull the teeth of the "jaw" away from the teeth on the pawl bars on the inside of the handcuff. These pink ones lack that feature. So they are an averagely good non-professional model of handcuff that should be safer to use for people. Normal handcuff keys cannot be guaranteed to work with the pink handcuffs because they lack a larger internal space between the two cheek plates, so you need smaller keys. But you get 2 keys with them.

The last pair are a genuine black pair of Spanish Alcyon handcuffs. They are made with thick carbon hardened steel and can make use of normal handcuff keys. They have ditched jaws for higher security from strong people, the swivels are strong, On chain link versions the chain links are welded for strength, while this model I have has a "universal joint" which has a bit more resiliency than a chain link model. These also have 2 pawl bars, that is 2 sets of teeth on the inside of the handcuff for extra security.

So I leave this to you to decide if you buy handcuffs what you want to spend your money on. I recommend you buy as good of a quality as you can afford, for the purposes you need them for. I do not recommend young children use metal handcuffs of any kind and for more mature children, make sure they have a real pair and know how to use the double locking mechanism.

🚨 American UZI Professional Handcuffs [NIJ]

These are the UZI Professional Handcuffs and are fully NIJ certified. Manufactured for UZI by CampCo.

These are from the famous UZI company. Yes the weapons company UZI. They do have the main features you would expect for professional law enforcement LEO use handcuffs such as double locking and ditched jaws to ensure a strong person cannot pull the arm away from the pawl teeth etc. They even have 2 pawl bars, opposed to how most US handcuffs have one single big lawp. So that is a nice thought to added security from picking and shimming. However the quality of these is similar to that of the Chinese high security handcuffs I overviewed a while back.

Quality of these is sub-standard in my opinion. The swinging arms are not perfectly aligned and sometimes "clink" stop when trying to press them onto the wrist (seen in section 2 demo section of the video) and they swing open because the teeth never engaged because the arm clipped the edge of the cheek place of the handcuff. Their keys have a cheap generic look as well as scuff marks. Even on the handcuffs themselves there are manufacturing scratches and scuff marks. Then on top of that, the double locking pin access on the side of the handcuffs are protruding outwards which makes double locking them more difficult. There should be a bit of a dent where your pin on the handcuff key easily slides into, at which point you press the double lock inwards. But since it sticks out, unless you aim the key 100.00% accurately, the key's double locking pin will slip off the handcuff and miss the "hole" which is not a hole. You will see what I mean on the video.

Over all, they have the features needed by professional but unless you buy 10 pairs of them to find one really good quality pair and send the other 9 back, I would not bother. The only good thing about these handcuffs are the features + the lower price. If you can go with another brand, I would. Pay the extra little bit of money and get better quality.

Edit: Even though they were in a sealed plastic bag, there was some rust around the chain's swivels and surrounding area of the body of the handcuff. After some work, I was able to remove 97% of the rust and after some oil around the swivels and the inner locking mechanism, everything works smoothly, even the double lock, which before oiling was extremely difficult to disengage as the video demonstrated.

These cost €27.90 not including delivery costs. Domestically in the UK I can buy a top notch quality pair of TCH model 800 handcuffs for €30.33 (currency converted for the TCH from GBP on the day of uploading this video)

Yuil M-09 K Light Weight Silicone Lined Higher Security Handcuffs

From http://thehandcuffshop.com/

These are the Yuil M-09 K Light Weight Silicone Lined Higher Security Handcuffs. They have higher security from raw picking and shimming than most handcuffs and they have a special silicone lining which is described by Yuil as protecting human rights by helping to prevent injury.

Normal handcuff keys work with these handcuffs. The picture on the site, I suppose shows a previous design because I was hoping to receive the angled keyway which only works with Yuil high security keys. As it stands I have had contact with several suppliers of Yuil who have confirmed that standards have gone down.

Police and military should be searching people for keys any way when they arrest someone, so the fact that actual picking is made more complicated, regular shimming impossible and special shimming more difficult due to the design of these cuffs still makes them more secure than most handcuffs.

These are Korean and are of good quality and strength. I just wish they did not skimp slightly on the mechanism because I believe the older models had a slight advantage since only Yuil keys with the split-bit would work with them.

🚨 Hiatt Model 3103 lightweight handcuffs [NIJ]

This is an old lightweight model of Hiatt handcuffs, model 3103. Bought cheap off eBay, used, ex-police with serial numbers intact.

Not too bad. I never had a lightweight pair of Hiatt so I was curious to give them a try and see what they are like. They are an aluminium or aluminum alloy but are very strong and according to the information I have seen, are also NIJ certified as you would expect from Hiatt handcuffs.

🚨 American Handcuff Co Model N100 Black - Era ~ 1980's "Fond Du Lac, Wis"

These are the old American Handcuff Co model N100 handcuffs in black. They're from the 1980's. The model number is not stamped on but based on historical information provided by the Handcuffs.org forum due to the age of these, they are N100

American Handcuff Co was sold to ASP in 2002-2003 who promptly shut them down. The old archived site of American Handcuff Co states their chain linked models as N105 which is the newest model that came out with prior to their acquisition and subsequent termination.

These are in pretty good condition I would say. The previous owner looked after them pretty well and I cleaned them up further.

They are fully functional and look great. Very very minor rusting on the outside at the time of filming, which I have since sorted out.

They have 1 pawl bar, ditched jaws and double locking. They operate the same way Peerless handcuffs do. These feel like they are built like a tank!

They have the markings "American Handcuff Co Fond Du Lac, Wis" No serial numbers exist (not scraped off, there just are no serial numbers)

Very nice handcuffs!

Enjoy :)

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🚨 Smith & Wesson M100-1 Chain Linked US Police Handcuffs [NIJ]

These are a pair of US Police Smith & Wesson M100-1 chain link handcuffs. High quality.

These are a popular brand and model of handcuffs that are used by American law enforcement. They are high quality but are not high security. They have tight tolerances which is good, however since they only have 1 pawl bar, a thin enough shim has an easy job to do and since there is 1 pawl bar it means picking can be done relatively easy with the simplest of devices, such as a bobby pin aka hair grip.

That said, they are wonderfully manufactured, look great, are relatively comfortable for people to wear and do the job they are intended to do. Temporarily secure people. Any self-respecting police officer would do a search for hidden keys and what not prior to proceeding with transportation of the prisoner any way.

I can recommend them.

A similar brand you can check out on my channel is Peerless. Peerless do also wonderful handcuffs that are comfortable, extremely well made and also are slightly more secure than these Smith & Wesson due to the position and angle of the keyway. Pick locking tools would have farther to turn inside the mechanism before unlocking, making them a tad bit more secure. Both are high quality and very nice though.

Don't get your new hinged or folding rigid handcuffs stuck on your arm like this!

Many people this Christmas will have gotten handcuffs. Hinged? Folding Rigid? Handcuffs stuck on one arm ? You may not have the tool to save both you and the cuffs!

In order to not have to resort to cutting the handcuffs off and destroying them, you will need a handcuff shim, which you may not have. It is a strong but thin piece of metal that you force into the pawl area, tighten the cuff one or two clicks while pushing in the shim further, in order to hold the shim in while pulling open the arm of the handcuff.

Best thing is to never ever prank anyone by locking a pair of hinged handcuffs on one person's single arm unless you are sure the keyholes are facing on the outside. Folding rigid handcuffs like Hiatt speedcuffs or TCH 850 only can fold with the keyholes facing inwards.

Be careful.

You could try cutting up a beer can and folding a thin strip in half to double the thickness and try and use that as a shim but there's no guarantees it will be strong enough to not get dented by the pawl bars teeth.

Alcyon 5236 Universal Joint Spanish Police Handcuffs (the better version)

These Alcyon 5236 Universal Joint Handcuffs are the better, robust version of the last Alcyon I overviewed.

These work with normal keys without needing specifically Alcyon keys which are unable to be purchased separately. Essentially if you have seen my early video on the chain link handcuffs, these are identical only with the universal joint instead of a chain.

I do like these a lot. My pair are pretty stiff because I have not had time to break them in yet. But the tolerances are quite good, for Alcyon.

If you want a cost effective ~ €20 pair of sturdy handcuffs that do not restrict TOO much, then these would be a great option.

Peerless 730 (730C) Superlite Aluminium US Police Handcuffs [NIJ]

These Peerless 730 Superlite, are exactly that. SUPER light weight. They feel like toys, if it weren't for the cold feel of the metal.

These are very string, NIJ certified handcuffs which are used by US police personnel who want to lighten the load on their duty belts. I have seen forums where officers have swapped from carrying one pair of heavy handcuffs and instead carry 2 pairs of these due to their very low weight. They weigh 147 grams if I recall correctly, even lighter than the last Yuil handcuffs I overviewed.

These scream high quality from every angle. The finish is a nice grey matt (can come in black finish too). The fit and tolerances are perfect.

I would highly recommend these handcuffs if weight is an issue and you still need strong high quality chain-link handcuffs.

Blueline Model 500 Chain-link (KF100N) Chinese Police Handcuffs

These Blueline model 500 handcuffs are made in China, but to a decent quality standard, a cheaper TCH alternative.

I had to buy these. They looked very very much like TCH820 large handcuffs design (with similar wrist capacity as TCH/Hiatt speedcuffs) in a low price. Now the price has gone up to about £15 I noticed, but still a decent price. I would pay anything maybe up to £18 for these.

The quality is not bad on these chain-link cuffs and the function is perfect, with the exception that the bow does not have perfect tight-tolerance alignment with the channel it has to pass. This leads to a similar effect as my previous Yuil video, where the handcuff does not positively engage on the first slap of the wrist.

But, all in all, they are seemingly decent cuffs. It would be nice if they were finished a bit better because they can dig into you a bit unless you use a fine file/sand paper/sharpening stone to smooth out the harsher edges. They are not "SHARP" but they are non-rounded, if you know what I mean.

I am happy to have these Blue line handcuffs in my collection.

Yuil M-09 Korean Lightweight Aluminium Police Handcuffs

These Korean Yuil M-09 Lightweight aluminium handcuffs have anti-shim protection!

These are extremely, extremely light-weight, to the point of almost feeling like toys. But I can assure you that these are not toys. They are very strong handcuffs. They come with 2 keys, special 2-bitted keys. However due to a lessening of quality standards at Yuil, you can usually open their handcuffs with a standard handcuff key, with varying levels of ease in doing so. But they do work as designed. Their keys work flawlessly and the function works fine.

The tolerances could be tighter, because there is some lateral play in the arm, meaning you cannot guarantee the teeth will lock if you snap them around someone's wrist with a single motion, because the arm may bounce off the side of the cheek places on either side and require you to squeeze them to the correct level of tightness. Not a big problem but still, another quality issue that could be resolved.

Over all I do like them and I have altered my thoughts about Yuil, away from "They need their own keys" to "at least it's a pair with shim protection" because in my mind, this is the only security benefit provided by Yuil these days.

Over all very nice handcuffs and I can only hope Yuil improve their quality controls and complete the high quality feeling that you would get with tight tolerances.

They are definitely worth the money though.


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Alcyon 5031 Universal Joint (instead of chain) Spanish Handcuffs

These Alcyon 5031 Universal Joint Handcuffs have a special joint instead of a chain...

These are a really nice design. They have a single, special hinge that allows for an extremely good degree of movement, while not having a chain that can be broken by a special forces technique that can snap the handcuffs by using the chain and physics without needing any tools. This seems much more sturdy and less able to be manipulated.

The keyhole is facing a different direction than you would expect from Alcyon. There are also more teeth on this handcuff. The wrist size seems to be a normal size.

A very nice and unique pair of handcuffs.

*A pity that the double locking mechanism is unreliable with non-Alcyon keys in this model. One side will open with a "standard" handcuff key but the other side will not disengage the double lock. I suspect this to be a problem with all Alcyon's models with the Smith & Wesson double locking design. This is the second pair I have witnessed this on. I sent the others back but because the Alcyon keys technically work, I won't bother sending these back. I will either keep them or sell them. I have other pairs that use unique keys, so it wouldn't be the first time I only have 2 or 3 keys to fit something.


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Alcyon Pro-Cuff 5050-RB Black Spanish Rigid Handcuffs

These Alcyon Pro-Cuff 5050-RB are made in Spain and have some pros and cons to them.

Firstly, they are a normal sized handcuff, which means they still fit the majority of people and will not let people spin the handcuffs as easily. This means it is more difficult, painful or impossible to swap your hands position, when handcuffed in a stack, in order to get access to a keyhole. This of course also means they will not fit people with abnormally large wrists (perhaps very muscularly built people and very overweight people.

Related to the normal size of the wrist capacity, they are more restrictive in movement. When handcuffed in front, palms together, you cannot (at least I, with my weight) am not able to get my hands close to my body in comfort, due to the more restriction. In this regard TCH840 rigid handcuffs are more comfortable, with TCH850 folding rigid being the best.

Also, the sloppy tolerances inside the mechanism, means there appears to be an accidental backloading capability by 1 click. This initially sounds like a benefit, until you realise that the final proper click, a click where it is still secure and not freely rotating, is not double-lock capable. If you double lock the final click, the handcuffs will over-close and freely rotate, causing a health and safety issue for people with small wrists who fall over while in the handcuffs. Nothing would stop their weight going onto the cuffs and crushing their wrist bones etc. I believe better tolerances (preventing all pawl bar movement when double locked) would solve this. I recommend Alcyon do this asap for safety reasons as well as added security reasons.

Over all, I do like them, they are an interesting diversion away from TCH rigid handcuffs. But they could do better. Also there are somewhat sharp edges on the fibreglass outercover which could be smoothed prior to installation on the handcuff.

Also, in regards to tolerances, the lateral unintentional movement of the rotating arms is kind of sloppy. One side of my cuffs is chipped by repettative use. This is because the arm rotates and has enough freedom of movement that it can land on the metal cheek plate, to the side of the channel where it should pass through. But when it hits this, it both stops the handcuff from positively interacting with the pawl's teeth and also chips away the metal, leaving a shiny silver dent where some metal is missing.

Here is a look at what they look like when you remove the plastic: http://i.imgur.com/bcoYpbo.jpg The central bar is part of the middle of the both cuff bracelets, it is one solid piece running from side to side.

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Kel-Met KM 1001 Polish NATO Certified Handcuffs, The Upgraded 1000 model

This is the new updated model of KM 1000 Kel-Met handcuffs.

They are NATO standard and made with Stainless Steel in order to prevent people having a skin reaction to Nickel.

Nice handcuffs but not the most comfortable I have ever tried though...

TCH850 Silver Premier Folding Rigid Handcuffs UK British Police (NIJ)

These are the fantastic TCH 850 Premier Folding Rigid Handcuffs used by the British police. NIJ Rated.

These are essentially rigid handcuffs, that can be folded in half to make carrying them easier for police officers and also more covert.

I have a video on a belt pouch designed for these cuffs, with a pair of TCH850B (black model 850) that I used to have.

The fact that they fold means criminals are less likely to notice the tell-tail profile that standard rigid handcuffs have when carried. Also, some officers do not like to have big long handcuffs that could dig into them when they sit down etc. So these are a nice authorised alternative.

They fold in half using the same normal handcuff key you use to operate the usual handcuff locking mechanisms.

Once opened, they stay rigid with only a very very tiny amount of flex, so essentially rigid for all intents and purposes.

Very comfortable for the person wearing them. The gap between the cuff bracelets is slightly longer, meaning when cuffed in front side by side, it is a bit more comfortable. However when cuffed in a rear stack, the slightly increased gap forces the arms higher and lower which could prove to be slightly more uncomfortable for people.

A very very high quality handcuff. A pleasure to have in my collection. I wanted this silver pair from the beginning but I settled on the black due to the discounted price. I got these silver ones at a real bargain price on ebay. Brand new, sealed, boxed everything. I am very happy indeed!

Clejuso Model 11 Police Handcuffs of Germany

These are Clejuso model 11 German police handcuffs. Mixed opinions on these...

They are used by German police forces and according to their site, all over the world. My first thoughts were a nice interesting visual design, which then turned into a feeling that they were cheapo handcuffs. Now I have come to realise there are indeed good as well as bad points on these handcuffs as I will detail.

Before we get to the good and bad sections, here's a fun fact: I have tried several brands of handcuff key in these handcuffs. TCH/Hiatt won't fit, Smith & Wesson won't fit, Peerless won't fit. The only keys that I have which fit and operate the handcuffs (aside from the proper Clejuso keys they come with) are ASP and Alcyon. As well as my own special TOOOL specification modified smith & wesson keys, which their very purpose is to be as compatible with the widest array of handcuffs known to man or beast.

The Good:
• They are comfortable. Not quite as comfortable as Peerless, but they are pretty damn comfortable to wear, of course as long as they are not over-tightened.

• The open design has shown me that if you used a handcuff key from another brand that is not tall enough on the bit (the bit does not poke out from the key far enough) which would normally lead to a dead-locked key that is permanently stuck in the lock, with these handcuffs you could likely continue to turn the key and just go around again or remove the key as nothing seems to block it. I tested this by turning one key in the wrong direction and pressing the pawl down, which caused the key to rotate in the opposite direction towards being pulled out easily.

• There is a button in order to double lock the handcuffs. It is crucial to double lock handcuffs in order to both prevent easy opening of these handcuffs (especially THESE which you can drive a tank up in there to open them) and also ensure the handcuffs cannot accidentally (or on purpose to blame the arresting officer for abuse) tighten and cause injury to the person who is wearing the handcuffs.

• They are made in Germany, so I hope the usual German manufacturing means that they are of sound and strong secure capability. I can only hope, given my findings so far, detailed in the "Bad" section...

The bad:
• There is no ditch on the rotating arm. The purpose of a ditch is that a protrusion in the body of the cuff slides through it as the cuff is placed on the wrist. If someone is really strong and pulls outwards, without the ditch they may be able to pull the teeth of the cuff out of the internal pawl's teeth and free them self from the handcuffs. The ditch ensures that this force will be shared with the protrusion in the cuff which is lodged into a ditch inside the rotating arm. These handcuffs have no ditch. The only "possible" saving grace is they are chunkier laterally, meaning there is more metal horizontally that the person would need to put force against. Maybe this will help in the absence of the ditch.

• There is only 1 pawl bar and it is very thin, meaning they may tolerate less force being put on them, causing the handcuffs to break and allow a strong person to free them self. Maybe.

• The pawl tolerances are pretty high, in that there is SO MUCH ROOM at the base of the cuff when placed on a wrist, that you could drive a tank up in there to unlock them if they are not double locked. I shoved a big heavy duty bobby pin or hair grip in there and shimmed the handcuffs open.

• The outer sandwiches of metal are somewhat thin. Thin enough that I can pinch hard and bow them closer together. This leads me to believe someone could pry the two sandwiches apart and essentially smash open the handcuff to free them self.

• You can tell they are made cheaply because there is a lot of open areas in the handcuff. This lead you see the inside workings (which is interesting) and they only have 1 handcuff mould and use it for both sides. This leads to one key hole facing the front and one facing the back, instead of both holes being on the same side. This is a classic cheap tactic as they do not need to design and separately manufacture a mirrored handcuff bracelet for the other side. Most big name cuffs have a properly mirrored side. These do not.

• They smell like gun metal, like an old west toy cap gun I had as a child. Just horrible. Possibly due to the different kind of metal used in the middle of the handcuffs.

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Peerless 700C Chain-linked US Law Enforcement (Police etc) Handcuffs [NIJ]

All American Peerless 700C Chain-linked handcuffs, used by Police and Prison systems. Unboxing & demonstration.

These are exceptionally high quality handcuffs. Built very well and look great. They do catch fingerprints and smears on them which can make them look less attractive but when cleaned up they are stunning.

They can backload by a single click, they have a good strong double lock feature and work nice and smoothly.

Peerless are some of the most comfortable non-lined handcuffs I have ever tested. I do not know what it is but they make very good handcuffs. In fact, Peerless invented this design of handcuff a long time ago and now almost ever major handcuff in use in the world today uses this same swing-through design.

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Rivolier 03045 (Modele: 2016) Latest High Security Prison & Police Handcuffs From France

These are the very latest high security handcuffs used by the French prison system and for transporting high risk prisoners, also by some French police officers.

They have two types of keys. A standard style barrel key, although it is far too massive for any normal handcuff key to fit, then there is a second key that they call a pin tumbler lock. I suspect this second key is actually a wafer lock based on visual inspection, regardless, this second key operates the double lock and makes these handcuffs exceptionally secure.

Hands are horizontal instead of vertical as you would expect with typical handcuffs. This makes manipulating the keys more difficult due to the awkward movement that is possible as well as makes the fit of the handcuffs more exact and thus secure, due to the shape being more natural to that of human wrists.

Similarly to the Ralkem Alfa-Proj cuff I previously reviewed, when you unlock the cuff in single lock mode, the bow gets very slightly tighter before it releases. This is less pronounced than the Alfa-Proj but still, be careful not to over-tighten them to ensure effective and painless removal of the handcuffs.

They are light weight too, made of aluminium with some parts being made of steel. I believe they weigh about 300 grams.

They do have some ridges to help prevent shimming but with my windscreen wiper blade with my bend in it (to make it follow the curve of handcuffs) was able to successfully shim them open while single locked of course.

You get 2 double locking keys and only one standard barrel key. Normal handcuff keys are FAR too small to ever fit into these cuffs, so buy extras, I got mine from cuffsland.

If someone is secured with these handcuffs in the double lock mode, it is almost impossible for someone to escape unless they have actual keys.

If you would like me to make a video demonstrating manual/self application and removal of the cuffs in double locked mode, please let me know and when I get chance I will demonstrate both locking mechanisms being applied and removed without needing anyone to do it for me.

Here is an image of a similar model of cuff in use on a former militant of the French far-left group Action Directe, on his way to prison: http://media.gettyimages.com/photos/former-militant-of-the-french-farleft-group-action-directe-georges-picture-id98541174

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Alfa-Proj 9923 (Ralkem) Handcuff [NIJ]

This Alfa-Proj 9923 is a single handcuff attached to a long chain that is designed to be attached to a case of some kind or...

Can be attached to an immovable object like benches or the fixed bar on some tables in interview/interrogation rooms used in US law enforcement to ensure the person does not escape.

They are extremely extremely smooth and hardly any effort is required to ratchet the arm, which makes double locking these cuffs during use even more important to prevent accidental tightening, which tightening these cuffs too far is a very very very bad idea as I am about to explain.

When you turn the key to unlock these cuffs, the handcuff tightens by 1 click in order to release the handcuff. So if you tighten them on the wrist too much, there is no room left for them to get any tighter which means they could be stuck on the persons wrist and with the force needed to try and unlock them, end up snapping the key inside the lock. So always ensure there is a little bit of movement possible to enable them to be removed.

The locking mechanism has a ward requiring their own special key with a double bitted end. You only get 2 keys and if you plan on using them I would recommend you try to source extra keys (cuffsland has some).

They have shim protection as well. There is a dip to catch shims as well as tight tolerances. I have been unable to shim with any shim I have, including a super thin shim. So I would call these somewhat high security. Although once you know what the key looks like you can bend a paperclip and eventually get them open.

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Smith & Wesson Model 104-1 Maximum Security Handcuffs [NIJ]

These are the Smith & Wesson 104-1 (M104-1) [the newer version of the model 104] MAXIMUM SECURITY handcuffs. They are used on the most dangerous and risky prisoners.

Particularly during transport and on Death Row,  as seen in this image of executed serial killer Aileen Wuornos sporting the original model 104: http://crimefeed.com/wp-content/uploads/2016/10/Aileen_Wuornos_crimefeed.png

They are HIGHLY pick resistant. They use a special, smaller than normal key with, obviously, a tighter keyway which makes sticking picking tools more difficult due to the constrained space.

Not only that, the mechanism is designed in such a way as to have keyhole bushing which has kind of a dome placed around the keyway with a gap only down one side so that the key's flag can fit into the slot. The key then has a bit that hooks up and around the rim of the dome so that this special key can turn, where others would be blocked. Extremely extremely pick resistant because you need something small enough but exceptionally strong, something that can bend all around the outside of the dome "Bushing" and that is very difficult. I have picked pretty much every cuff in my collection except this one. Here is an image of the mechanism: http://i766.photobucket.com/albums/xx303/Americanpw/PICT0001-5.jpg

Other high security handcuffs are available to the US police and department of prisons but I believe the label of "Maximum security" on these is applicable here. Making cuffs require a 2 bitted key is difficult to pick but having 2 paper clips can get the job done. Trying to bend something thin as hell but strong as hell around that bushing would be quite the trick to pull off.

These are not typically used by regular police officers because the keys are more rare and it would cause problems for releasing the person at the other end if the original arresting officer was not present. So they are typically only used during transport to prisons, on the worst people and in really serious places like death row.

They come with 2 keys and locating extra keys to buy can be difficult, due to the high security, excuse me, MAXIMUM security nature of them lol.

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Hiatt Model 2010 Chain Linked Handcuffs [NIJ]

These are the original Hiatt chain-linked handcuffs, the ones that the British Police force were using prior to the introduction of rigid Speedcuffs.

TCH (Total Control Handcuffs) company make these now, they are the TCH800 (model 800) handcuff, there is a video of them on this YouTube channel.

Something I have noticed, is while the new TCH800 look nice and shiny, these Hiatt 2010 have nice edges of the cuffs (counter-milling, is it?) where instead of a hard edge right angle "L" They cut the corner of the L off so it is not as sharp against the skin. Still, both these hiatt and the new TCH are comfortable. The TCH have a subtle rounding I think, as opposed to this edge cutting off thing Hiatt did.

Otherwise, aside from the finish (duller vs the really shiny TCH) they are identical handcuffs. Made by the same factory, as Hiatt in the UK continued under the new name TCH and now the actual HIATTS brand is owned and produced (with a different branding/logo design) by Safariland in America. Ironically I think TCH took over the Hiatts business in the UK around 2010, coinciding with the model number of these cuffs :)

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Yuil M-11-1 Korean (GOOD) Hinged Handcuffs With Anti-shim & NIJ Certified

Welcome to a new handcuff video on Yuil M-11-1 These handcuffs are very good, although not without an issue I have found...

These have shim protection that makes them more secure when single locked, they are hinged which provides a greater degree of control over a violent subject and they take a non-standard key*.

The downside is that I believe quality control is lower in this brand of handcuffs. I believe that the silicone lined models that are NOT light-weight aluminum models will be perfectly fine. But these older models and light-weight models tend to work sometimes with standard keys, which is frustrating. Their leg irons do it, the previous Yuil hinged model I reviewed (and threw away in a few months later) also had that problem. So, they are more secure than regular standard handcuffs but if the quality control was higher, they would be perfect and high security by requiring their special double bitted key.

Yuil, if you make a handcuff that uses a non-standard handcuff key then please make sure it ONLY works with that non-standard handcuff key, else you are not providing any extra security with that key, you would be providing 'security theatre' As Bruce Schneier describes it. Please fix this issue, this is not the first time I have seen this happen.

All in all, good, higher than usual security handcuffs. I just wish Yuil would put more care into their work these days. I would still recommend them though.

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KEL-MET Military Standard Chain Handcuffs Stainless Steel NATO Certified: NCAGE 2034H

These are NATO standard: NCAGE: 2034H standard chain link stainless steel handcuffs by KEL-MET. They are not, as far as I know, certified by the NIJ. However they are certified by NATO.

However this being the case, I personally believe the box that they come in looks terribly unprofessional, like something that came out of a 1980's children's comic series. Don't be fooled though, they are legitimate NATO certified professional chain-link handcuffs.

The size capacity of these handcuffs is similar to UK Police speedcuffs. The larger size. I can close them one click and easily pass my hand through the hole, something which is impossible for me on "standard" size cuffs.

They are a very solid, smooth operating pair of handcuffs. They use a non-standard key and have 2 pawl bars, so these could be considered higher than usual security although they are pickable in a similar fashion as Alcyon can be. These are Polish handcuffs. So, being made in Poland, I was interested to see the quality as I have never had any from there before. Very well done. I am impressed. Also they purposefully use stainless steel to prevent the chance of skin reactions to nickel that most other companies coat their cuffs in.

These are primarily for the Military it seems according to their own site's category: http://www.kelmet.pl/en/produkt/stainless-steel-handcuffs

Official Current Latest UK Police TCH 840 Handcuffs Overview (NIJ) Police Supplies HD

This is the official latest standard issue for the UK Police force. The TCH model 840. This edition has keyholes on one side only for security reasons.

This helps to prevent or limit the chance of an offender using tools or keys to escape from the handcuffs.

TCH stands for "Total Control Handcuffs" and is a rebranding of the old HIATT or HIATTS cuffs. They are still made in England using the same factory. Safariland acquired Hiatt sometime around 2010 and after some failures of trying to absorb HIATT into their own branding, they have decided to revert and keep the HIATT brand as a sub-brand of Safariland due to global recognition of the HIATT brand.

So, everything that HIATT had is brought through into the TCH range. Essentially they are one and the same, TCH, Safariland, HIATT. Perhaps in the future new innovations will begin to distinguish TCH from it's HIATTS past.

These are very solid, rigid handcuffs. They allow an officer to have maximum control over a suspect by limiting their movement more effectively than with chain linked handcuffs and having the capability to use the cuffs on pressure points in the wrist to help subdue violent criminals to effectively restrain them. Kind of how martial artists can use pressure points.

An interesting note is the depressions or markings on the back side that show where the keyholes would be created on a pair of Model 842 (I have a video on that model too). This is likely to decrease the cost of production by providing markings for machining the plastic for that model. Or perhaps a demonstration of keyhole placement so people can decide which model they want? This is unknown and has no bearing on the function of the handcuffs.

Very nice handcuffs. However I would like to see the UK Police force transition to hinged handcuffs to still maintain the pressure-point and movement restriction capabilities while at the same time offering a little bit extra comfort for the person. These are great for violent people in my opinion but might be a bit over-kill for an average joe who gets into an argument and is escorted to the station in these. Still, they are high quality and perfect for what they are designed for. Plus they fit larger wrist sizes as these only come in the "Superior" size model. For fitting smaller wrists police officers can acquire the TCH handcuff recuder, which is also overviewed on my channel.

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USA Police - ASP Hinged Handcuffs Model 200 NIJ Certified So smooth operation!

These are the ASP model 200 hinged handcuffs. An NIJ certified handcuff for law enforcement. They have exceptionally smooth operation, not a hint of stuttering or harshness just perfect.

You can double lock the same way you would a smith and wesson pair, using the window, but also you can double lock using the key as I show you in the video. They are very sturdy cuffs although a little lighter than I first imagined they would be.  The locking mechanism can be removed and replaced (if you can acquire more... I cannot in the UK) or removed for easy cleaning and maintenance. These are designed to be shim resistant and I would guess they are somewhat pick resistant due to the design but I have not tested either.

Now comes the down side. The locking unit has plastic parts internally. The double lock window and indeed the entire double locking mechanism is plastic. To engage the double lock the key needs to interact with plastic, to disengage the double lock the key also needs to interact with plastic. About the only part I presume is metal is the pawl spring and the pawl it's self, meaning the key will touch metal to perform a normal single lock unlock. What does this mean? It means that over time (or no time as I will come to..) it is possible that the plastic areas can wear out at which point you will be left with either the inability to double lock the cuffs via using the key turn method, the cuffs will be permanently stuck in the double lock position due to the plastic being worn where the key needs to travel to unset the double lock, or a combination of both issues. However a prominent member of the open organisation of lockpickers has said he has never heard ASP cuffs having a weakpoint in the key area. So below is my freak small percentage case where you get something that is not working from the start:

Over all, the feel and function of these handcuffs are extremely nice, everything is smooth, no rough or sharp edges, just perfect.

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USA Police & Prison ~ Peerless 850C Red Hinged Handcuffs NIJ Certified

These are all American Peerless model 850C hinged handcuffs in red colour or color if you're from the US :).

Typically coloured handcuffs such as these are less used by police, although do get used from time to time, but usually a prison or court will colour code the clothing issued to prisoners with the handcuffs and everything else (shoes etc), so if someone dressed in all red tries to leave the building, for example, then everyone knows to apprehend them immediately.

These are really high quality handcuffs, I have to say. The tolerances are really low and everything fits just perfectly. The hinge connector design provides a slightly higher degree of movement rather than a more constricted design. Although they are a similar wrist size capacity as TCH/HIATT Superior size, such that the UK Police use.

One thing to note, these are NIJ certified for legitimate law enforcement use but do not secure a prisoner to an immovable object by one wrist cuffed and one attached to the object. This hinge design can be snapped if a strong prisoner puts their full force and strength into snapping them. This is ONLY possible because of the excessive force that can be applied without crippling pain. If both wrists are cuffed with these handcuffs, the force the person can apply is really low and would end up snapping their wrists, orders of magnitudes before they would ever break the hinge. Here is a video of someone breaking a pair of Peerless: https://www.youtube.com/watch?v=O1ccAwIJmos

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UK Police HIATTS Speedcuffs (model 2103) Rigid Handcuffs NIJ Certified

It was requested for me to make a video on HIATTS Rigid Handcuffs, known as SpeedCuffs, so I bought a pair to show you all. I will also be making a comparison video when I buy a new pair of TCH840, rather than compare against my TCH 842 twin keyhole version.

This model is the one that UK Police had been using universally since the mid to late 1990's. However apparently there are some police stations that still get HIATTS, which are still being made by Safariland who purchased the HIATT brand back in 2010 I think it was.

The official model number for these speedcuffs is the model 2103.

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Alcyon 5005 Hinged Handcuffs [ Made in Spain ] NIJ certified

This is the latest hinged handcuffs from Alcyon. The Alcyon hinged handcuffs model 5005.

These are a high quality handcuff. They are Spanish and have a very smooth operation and the double locking mechanism is very stiff meaning there is no chance of accidental engaging and mechanism to disengage it is very smooth, as with the black chained ones I overviewed early on this channel.

I have since learned that both pairs of my Alcyon handcuffs have sloppy tolerances with regard to double locking. This came to my attention when I gimmicked my TCH800 cuffs to allow them to pull open. Yet when I double lock them they are seemingly as secure as if I had not gimmicked them and refuse to open without using the key. I also did this gimmicking process to these Alcyon hinged handcuffs. However I noticed when I double locked them, they would still pull open to a large degree, not fully but they were no longer "secure". So I opened them, double locked them and then pressed down on the pawl bars. There was a lot of downward movement. So, while new, non-worn out cuffs are secure when double locked (Alcyon), if the teeth get worn down a bit they may slip and pull open or close further accidentally because the pawl bars are NOT statically unable to move. TCH, for example, will not move at all. Nor will Peerless. Alcyon should, in my opinion, improve and tighten the tolerances so that when the double lock is set, the pawl bars have zero movement potential.

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High Security Handcuffs - Chinese Police, ANHUA Model HC-021W with Wafer Locks

These are the ANHUA HC-021W handcuffs as used by Chinese authorities for high risk detainees. From http://www.cuffsland.com

These were inspired by the very expensive and well built TCH Model HSH1 which are extremely hard to find and three times the cost of these ones that China uses.

These handcuffs are decent. High security, yes. Although the finishing quality is not particularly good. They do cut into your skin if you start struggling. Maybe that is a Chinese design feature for the kinds of people who are usually in them :) I do not know this.

I wax polished them as I do all my cuffs and I have filed these slightly although it only marginally helps.

People mistakenly say these handcuffs have a pin tumbler lock on the top for the double lock. This is in fact incorrect. The double locking mechanism uses a wafer lock consisting of 4 wafers.

I think the quality over all could be a bit higher but I suppose if you want super high quality, pay through the nose and import some expensive TCH HSH1. These Anhua handcuffs do the job. They are highly secure. If you actually have the specific key to the pair of cuffs you have on, you can (if you are just nimble enough and they aren't too tight) use the double locking key to then allow yourself to use a standard key to open the normal mechanism.

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TCH model 930 Aluminium Lightweight Hinged Handcuffs UK Police (NIJ) Police Supplies

This is an overview of the TCH930 lightweight aluminium (or aluminum if you're in the USA) hinged handcuffs.

They are really great quality. The more TCH I buy, the higher the quality feels. Strange how that happens. These are decidedly lower weight than any of my other TCH handcuffs. The tolerances are astronomically right. No play or wiggle at all in the ratchet bar when closed and double locked.

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TCH model 850B Folding Rigid Handcuffs UK Police (TCH850 Covert Black) (NIJ) Police Supplies

This is an overview look at the TCH850 folding rigid handcuffs, in black. They are as expected NIJ certified. These are used by UK police when they need covert handcuff capability. They are concealable in a pocket when folded and the black color helps hide their visual presence in the dark. I like these handcuffs a lot. Same usual great TCH quality.

In the next video I visually compare the sizing between the TCH 840 series (842) and the 850. Surprisingly the 850 handcuffs are further apart than the cuffs on the 840 series.

EDIT: 08/12/2016 (UK date format) I won't be buying any more TCH or any other brand cuffs that are black via oxide/bluing. Rust is ridiculous. I had to clean thick orange rust from the inside skin-contact areas of the cuffs the other week. Even they aren't being used. I do not want high maintenance cuffs. I have since cleaned them up again. Due to the heavy cost, in the future I might buy a non-black version of these but that is low priority.

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Yuil "High Security" Light Weight Hinged Handcuffs [NIJ] Model M-11 K

These are the aluminium / aluminum light weight and "high secure" handcuffs. The quality is good, essentially they are a light version of the Y01-K being rigid rather than a chain. HOWEVER. I have to tell you, while these are good handcuffs, they fall short of my expectations and make me like them less. Let me explain...

My other Yuil I mentioned require you to use the high security key, even if you have a normal key that will physically fit in the keyway, it will be blocked from turning to unlock anything. These M-11 K rigid cuffs will unlock with ANY standard key that will physically fit in the keyway. In my example I tried a standard un-modified normal Smith & Wesson key and it unlocks both double and single locks. Disappointing.

They do retain all the shimming protection and comfort from the silicone, so they are GOOD handcuffs and technically more secure than your typical handcuffs due to the shim protection. However the keyhole orientation is standard and would be easy to put a key in the hole by mouth due to the simple horizontal orientation.

Where I would give my other chain link yuil Y01-K a 5 star rating, I would give these M-11 K a 3.5 star rating because of the "higher than usual security" shortcomings that I expected from other models. My feeling is this shortcoming only happens in aluminum / aluminium models, possibly to do with weight reduction. It is the same entire locking mechanism as seen in the MY-006 legirons. I think in the future, if I were to buy any more Yuil handcuffs I would go with normal steel/nickel models and ignore the aluminium / aluminum versions unless you truly ultimately require it. The reason I went with it was the easier capability to cut them off in case the need would arise due to a less than positive outcome from picking the locks, due to the softer metal.

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Official UK Police TCH 842 Handcuffs Overview (NIJ) (Successor to TCH840) Police Supplies

This is a brand new (not ex-police) pair of TCH model 842 handcuffs, also known as Speedcuffs. Of course NIJ certified for law enforcement use world wide. I  am really impressed with these. I have never had a pair of 840 range or in fact any rigid or hinged handcuffs at all until today. I can see why police prefer them. Let me explain.

Firstly, as they are rigid, they extremely limit your degree of movement while at the same time allowing a police officer to cause pain to the wrist/arm in case of struggle, even if only one cuff is on the suspect.

In the video I only show both hands out front, as you would expect to see someone in chain handcuffs when cuffed to the front. I actually assumed this would be more comfortable than the "stack" arrangement that police use where the handcuffs are vertical and one hand pops out the left and one hand pops out the right. The stack is far more comfortable but was more difficult to show on the video given my setup.

These have 3 pawl bars, as expected which makes it a bit more difficult for people to stick things in the keyway and pick them. Also makes shimming slightly harder in that you need a full width shim to ensure you pull down all 3 pawls.

A very high quality handcuff, better designed than even my model 800 TCH handcuffs.

This is the slightly more expensive TCH model 842 not the common TCH 840 you see all over youtube that police mainly use. There is one KEY difference which I will leave the video to demonstrate ;) but for all intents and purposes they are the exact same handcuff with one glaring exception that makes these more suited to the average collector, in my opinion as you will see demonstrated in the video.

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Yuil High Security Handcuffs model Y-01 K (NIJ Certified) overview [Feature Rich]

I got these from www.thehandcuffshop.com

These are high security, durable and feature packed handcuffs. They have a comfortable silicone coating to make them more comfortable for who ever is wearing them (!Deviant" from TOOOL jokes on a handcuff conference that couples would love to use these in the bedroom for the extra comfort haha)

These handcuffs can backload, making easy fast deployment in dangerous situations. The bows have a flat edge which means when speed cuffing someone (slapping them on the wrist) the force is not on a tiny area where the bow curves, since the force is distributed through a larger area where the flat area of the bow contacts with the wrist. Very thoughtful designed handcuffs.

They have two pawl bars with a metal dividing split throughout the cuff, making shimming very difficult because shims would need 2 prongs to get around the metal divider. If that wasn't enough, they added sharp edges on the inner area near the pawl teeth so that even if you force a shim down there, it will get caught on the teeth and never reach the pawl!

You may fit a normal key in the keyway but it will not turn in either direction enough to either unlock the single lock OR the double lock, which is a good security feature because this means you require the correct special key.

While the key is somewhat thin and easy to assume that it would break, the spring in the cuffs is not too tight, so gentle key turns will unlock the handcuffs so that it is no concern.

Very smooth working cuffs, although I will likely have to break them in on one side where you unlock the double lock.

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Smith & Wesson M100-1 WeatherShield (Yellow) Handcuffs Overview (NIJ) Police Supplies

These are my new Smith & Wesson Model 100-1 WeatherShield handcuffs which come in Yellow color.

Very smooth, very high quality and internationally known handcuff that is NIJ certified for law enforcement use. But these particular ones are more resistant to water, which is why they call these WeatherShield. They are powder-coated yellow for extra durability and identification.

Comfortable both to apply to someone or the person with them on.

You can lubricate them with a light oil now and then to keep them nice and maintained. Like usual I wax mine with renaissance wax for extra smoothness and protection (also the key too).

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Peerless Model 700-6X NIJ Certified Handcuffs Overview

Overview: These are very smooth moving Peerless handcuffs. They are the model 700, but the longer chain version that has 6 extra chain links (Model 700-6x) (8 chain links total) which are designed to offer more comfort for larger individuals who are handcuffed behind their back.

These feature backloading capability, as shown in the video this offers quick and easy application on the wrists.

These are Nickel plated, they look great, they feel great.

Tolerances are acceptable on the single strand (rotating arm), they don't move laterally outside the pawl channel, however it would be nice if the tolerances there were a bit tighter. The key-way has nice tolerances making picking more difficult.

As for pawl security, they only have 1 pawl bar, meaning if you do not double lock them, someone might be able to shim them easily, with any thin piece of metal such as a thin pin. On some of my other cuffs they have multiple pawl bars, meaning a thin pin may trip 1 single pawl bar but not all at the same time.

That being said, the key-way is tight and is positioned as such that extra work would be likely needed in order to pick the lock.

As a side note, I always coat the exterior of my handcuffs in Renaissance wax, as it provides an even nicer feel to them and offers extra protection from rusting, tarnishing, damage from skin oils etc. Plus it gives them a slight extra visual sheen which I find quite pleasing after they get rubbed down with a micro-fibre cloth.

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ALCYON 5050-B NIJ Certified Handcuffs Overview

These are my ALCYON 5050-B handcuffs. They have a very smooth ratcheting motion, it cycles through easily when placing them on the wrist. They have heft and can tell these are high quality. 
They are NIJ certified for governmental usages. Sold internationally to governments and security services all over the place.
2 pawl bars makes this slightly less secure from picking than the TCH 800 series, because they only need disengage 2 instead of 3 but this is not a big malady at all, especially considering the key turns differently than expected and further, making it more difficult to get succeed.
These are louder when ratcheting than the TCH 800, but there is less jingle jangle when moving them around, due to the coating than nickel plated ones like my TCH 800. 
I threw out my Viper handcuffs because I want good brand versions with 1 pawl bar so I then will have 1, 2 and 3 pawl bar cuffs. Can you recommend me some available domestically inside the UK from on-line vendor? Also if you have found items good for picking and shimming please leave a comment to me. Subscribe! 
Thanks ;-)
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