A 16mm chain and double doofer anchor have been securing my bike for several years, I sleep soundly. Bought the 13mm chain and round lock for security whilst im away after Bennetts review confirmed my own thoughts. Not yet tested, but again both chain and lock appear great quality and the chain wraps up tightly for carrying in a tail pack. Happy. Personal comms from the guys at Pragmasis on the order a nice touch, appreciated.

Arrived extremely promptly. Purchased after reading numerous reviews about best lock and chain. Seems very sturdy. Using it to secure a motorcycle and bikes.

Very well made chain and I love the RL21 lock.
Fantastic after sales advice. This company knows its products. Highly recommend this when touring or leaving your bike for periods of time.
The chain fits through the rear axle of BMW R1200GS 2013 plus bikes providing even more security.
Fantastic very reasonably priced delivery.
Highly recommend this product and company.

As the owner of a specialist electric bicycle costing as much as many motorcycles and more awkward to lock than many bicycles, I purchased a 1.5m noose end 13mm Protector chain and RoundLock package along with both sizes of DIB D-Lock, all keyed alike. Customer service was excellent, I received the products quickly and was kept informed during the process.

After a couple of weeks of regular use, I'm getting on well with the locks and chain. I'm very impressed with how sturdy they feel. Together they definitely make up for only having bottom-of-wheel stands available as locking points in my building's communal cycle garage.

My static security locking strategy is to remove the bike's battery and make use of both the Protector chain and all 3 locks.

I angle the longer DIB lock's shackle over one chainstay and slide it diagonally through the rear wheel spokes, my bike's chain and both sides of the wheel stand. The larger shackle capacity allows for this and leaves space below to secure the D-Lock without it touching the ground.

With a large DIB securing the rear, this leaves the entire length of the Protector chain free to secure the front end of the bike. I put the shackle of the smaller DIB D-Lock through a space at the bottom of the bike frame and pull the Protector chain through the gap between the shackle and the frame. Then I pull the loose end of the chain through the spokes at the rear end of the front wheel and back around to hook one exposed end of the DIB shackle through the final link before locking the D-Lock closed. Finally, I lock the RoundLock into the same chain link (if the D-Lock is breached, the chain still won't go back through the spokes with this attached).

The 1.5m noose chain was the perfect length for this, it forms a tight 'figure 8' from the D-Lock to the wheel and there's no slack where the chain touches the ground, it can rest on one of the pedals.

Having keyed-alike locks makes the whole process of locking and unlocking faster than it sounds.

When I'm away from home, the Protector chain stays behind in the garage, locked to the stand using the RoundLock. I take the two DIB D-Lock with me as Sold Secure Motorcycle Gold rated portable security.

For shorter stay parking, the battery remains locked to the eBike and I use a folding lock and my bike's built in frame lock as secondary security for locking my wheels to the frame. I can then easily lock the front and rear of the frame to the cycle parking stand without having to worry about also getting a wheel through each shackle. Having a low step-through frame and a large battery in the way otherwise makes this challenging.

All in all, I'm very pleased with my keyed-alike Pragmasis locks and chain and would happily recommend them to anyone else looking to secure a high value electric bicycle both at home and when out and about.

Quick delivery well packaged pleased with the quality and heft of chain the lock has smooth operation and well finished cannot find fault with these products all at a reasonable price.

I purchased one of these, along with a Beefy Bridge, to secure my electric cargo bike. The chain just fits through the spokes of the rear wheel, allowing me to secure the bike through the rear triangle, and the sleeve means my bike doesn't get scratched.

The lock fits perfectly in the end link to secure the chain and is really easy to handle.

I'd seen this chain and lock reviewed on Bennetts YT video and needed another chain for the garage. DPD are in my experience the best courier with accurate timings. The chain was well packaged, delivered quickly and when promised, it was better quality than I expected and put to use immediately. Great service. Thank you. Can't often say that these days.

Bought this package after a fair amount of research and was aware that the round lock may not be able to be used as a standalone disc lock on all bikes. as was the case with mine. However the design is fantastic and I am happy to keep it to secure the chain for garage security

I bought the 2 metre 13mm chain with noose end and RL21 round lock to use as portable security for my Yamaha motorcycle. The noose end chain allows easy connection to lamppost or other immovable object. The RL21 is compact with sloping shoulders and is a close fit for the chain, this makes it almost impossible to pry off, the rounded shoulders would make grinding off very difficult. The 2m noose chain also allows the two wheels to be linked if there are no lamp posts available! Very pleased with my purchase.

I bought he 13mm chain so that it would go through the rear axle of my BMW R1200GS, a 1.5m chain with noose so that it was not too bulky and weight and the round lock which is a great design. Hopefully It'll never be needed, but just by being there I hope otherwise 'interested parties' will go for somebody else's bike (sorry!). Great advise from David - no BS and a practical knowledge, talking my down from a 16mm chain.
Thanks!

I bought this chain/lock combination to secure my motorcycle whilst out and about - not too heavy, but seriously strong. The chain, sleeve and lock are all very well-made and fit nicely through the frame and rear wheel (or frame and round a post, if available). I must also compliment the company on their website. They have a wide product range, things are easy to find, and there is a lot of useful advice. Delivery was fast, and I was given both a time and day, which is very helpful.
All in all, a great company to deal with.

There is more to securing a bike with a chain than I expected. David steered me through the minefield and even managed to dig out a chain slightly longer than spec to give me the best possible solution. Thank you.

After messing the guys at Pragmasis around for a couple of weeks, I finally settled for a 1.2m 13mm chain with a roundlock padlock. this seems to be the right mix of intimidating chain thickness and a unique padlock with excellent reviews. 1.2m may be too short to allow my bike to be easily attached to street furniture but it weighs in at under 5kg so I'm more likely to carry it and therefore use it.

Very smooth ordering process and excellent communication about despatch and delivery. I'm really pleased with both the chain and the roundlock and I took the opportunity to order a second keyed-alike roundlock, which is really handy given the growing number of keys I carry around.

From start to finish the buying process was easy and clear. Choosing was straightforward with clear data helping my decision, and as soon as I placed the order I was emailed with details of when to expect delivery.
My order landed as promised on time and in good condition. My only observation of a potential area for improvement would be that the packaging box was covered in plastic tape, which is understandable as it needs to arrive in one piece, but there are now alternative more environmentally friendly tapes available which would help reduce plastic use,just a thought!
Already recommended to a friend!!
[Pragmasis Comment: Thanks for your kind comments. We have looked at several more Eco-friendly packaging options but found issues with lack of strength and poor adhesion, as well as some options not being viable with the volume of shipments we send (too many for some options; too few for others - We can be caught in between!). Strength etc are obviously fundamental to what we supply as pretty much everything we do is heavy! We are very keen on this kind of thing, though, and will keep looking as we have been trying to minimise our impact on the planet ever since we started, way back in 2003! Thanks again.]

The 13mm chain is lighter than the more secure thicker chains so makes a good chain to take out and about. The round-lock is also really small for the security it offers, and is useful as it doubles up as disc lock.
Also really good customer service and communication from securityforbikes.

Just taken delivery of 2 x 13mm Protector chains and keyed alike roundlocks. Purchased these to secure 2 bikes and garden machinery in garage. Initial thoughts are these are perfect for the job and should be a good deterrent should any low life get as far as getting into the garage. On another note - Service was great with the items being ordered at 2pm and delivered at 9:30am the following morning! Many thanks

I don't have much experience with security chains, but I will say that this chain oozes quality. I was worried that I should have gone bigger than 13mm, but this thing is still big and heavy and I love it. Combined with the roundlock, I'm very happy.

Just taken delivery of this package deal and am really pleased with the kit.

Also: Fantastic customer service throughout! Thanks!

Currently using the 13mm chain and roundlock to secure my tandem. Now that it is in a locked shed and chained to a cast iron radiator I'm confident that it will not leave the shed unless I want it to. Also very happy with the service from Pragmasis who provided advice over the phone prior to purchase. Next day delivery also appreciated.

I will be using it to secure my bike in my garage and take it on longer trips. It is a little heavy for transporting when popping to the shops, but the option of using the round lock as a standalone disc lock is very useful. On receipt I was very impressed with how solid the roundlock feels, it would certainly deter me from trying to pinch anything! I will probably never find out how tough it is, but hopefully it will give a lifetime of bike security and peace of mind.

I bought this for taking out when I'll be leaving my bike unattended. The round lock makes a very solid, but portable, disc lock for short lock-ups, and the chain for locking to something when leaving for longer.
Also amazing customer service and communication!

The lock is quick and easy to use and the 13mm chain is perfect for carrying on the bike, the right balance between security and portability. The customer service from these guys was amazing. I recommend very highly.

I'd been looking for a chain for quite some time, and pragmasis came up highly recommended against some of the more 'generic' products. Hefty enough to use alongside other security in the garage, portable enough to take in a long trip. The roundlock is spot my needs, versatile and far more.portable than competitor offerings. All for a great price.

Really great customer service with detailed info of when the package will arrive. The products speak for themselves. These are top of the line.

These guys take security very seriously, know their products and are willing to advise to make sure the customer gets best option for the application/s .... my order has included Noose Chains, Round Locks & Dib Locks all keyed alike ... SFB have been happy to split orders to get what I needed and the quality of the items received are top notch! .... any trustworthy security is going to represent a high outlay but compared to what else is on the market I have what I need and can trust at a fair price and delivered quickly too ...Thank you SFB!

Great customer service - communication was quick and very informative! The product arrived promptly and I am extremely satisfied with the quality.

excellent product delivered ontime with good communication. Recommended.

Excellent service delivered together with the mega torc anchor extremely quickly with full updates and info.

Not used as yet, but chain and roundlock are of a weight and quality that inspires confidence of solid security.

I bought the 13mm chain after much research to use as a carry chain when out and about. The chain and roundlock are of excellent quality and craftamnship and you realise this the moment you pick it up!. I think it is a great compromise between weight and security and first impressions are excellent!