Saw this reviewed on the Bennett’s insurance blog. It came highly recommended and I can see why. This is a solid bit of kit but small and light enough for a touring security device.

Superfast delivery, great communication and advice, excellent product that is brilliant and a great price. Product and Pragmasis highly recommended.

Bought this to fulfil two purposes, to connect two chains and also as a disc lock, which it does very well. A very good price for a great little lock.

I bought this product after I read the reviews online. I received it today and it looks solid and compact, exactly what I was looking for. It's a fantastic value-for-money product, however, the most amazing surprise was the fast dispatch and the incredible communication and customer service from David. Very rarely nowadays you get 5 stars in value, quality, and service. I will certainly be a return customer for Pragmasis.

An incredibly robust and compact lock, at a really competitive price. Special thanks to David for amazing customer service and a really quick dispatch.

super strong super simple and super service, Buy one today you will not be sorry

I was looking for a new lock for a while. Looking for the impossible: doesn't brake the bank but is seriously good security. I wasn't sure about the RoundLock but after a bit of research I was damn near convinced. Then I watched the LockPickingLawyer video picking it. He points out that the average thief couldn't get into this which leaves cutting as the only option, then demonstrated how insanely difficult it would be to cut. I was sold!
I've now been using it since September 2020 and have found it perfect - currently using it as a Disc-lock.

I bought this lock primarily as a heavy duty disc lock, the quality and construction is fantastic. Yes it is more expensive than much of the rubbish made in China and with good reason - it is built to last. Service and comms also spot on, will def be my go to for bike security. Many thanks

Does what it says on the tin. Fast and efficient service this the second time i have used Pragmasis for security for my Honda. Quality products and quality service. Would recommend

I’ve got the 19mm chain but the round lock flops around all over the place,and because in the video he holds the lock at the top of the link of course there’s no where to attack but soon as you let go there’s about three inches to get in and attack it,and yet to find a disc it fits on
[Pragmasis Comment:
I'm very sorry you are not impressed. I have not heard about you making any comments back to us so please get in touch via e-mail or phone or Facebook and we will see what we can do. Regarding your comments on the RoundLock and the 19mm chain (I don't know if you're using it with our Protector 19mm or a chain from another manufacturer?) then you need to use the RoundLock Combo (RL21A) socket to get compatibility, and it will occupy around 30mm of the 100mm internal clearance of the link. However, that 100mm also has 19mm of additional obstruction from the preceding chain link, and another 19mm of obstruction from the interlocked opposite end link, so there is actually a gap of around 100 - (2 x 19) - (e.g.) 30mm = 32mm of actual remaining clearance in real-world usage. Given that this space is sitting in between a bulky chain link and the side of the RoundLock, it is nigh-on impossible for a thief to get any credible form of attack going within that gap. If you have another form of attack in mind that could exploit such a small and awkward gap then please e-mail us with details as we don't know of anything that any thief could benefit from.
Regarding the compatibility with brake discs, that is simply down to the dimensions that we publish for the lock as compared to the openings in your brake discs. I am sorry if you were expecting it to fit and it doesn't. If you wish to get in touch to request a return and refund, then we would be happy to look at that for you?]

I got this after reading some excellent reviews, and I am not disappointed. It's small and easily portable, can double as a disc lock and as a chain padlock. It's polished and well finished. Now I am not an expert lock-picker or padlock breaker frankly, and I have the feeling that this is going to be tough for the baddies to crack. Definitely recommended. Only glitch the plastic keyhole cap broke after a few weeks, a minor thing, I will try to replace it.
[Pragmasis Comment: We are happy to replace the broken cap free of charge. Apologies for the inconvenience.]

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!

My MT07 was recently stolen so upgrading security for my next bike. This has consistently been recommended as one of the best disc locks you can buy - I’ll be investing in their chains too. You’ll have to Houdini to steal my freaking bike!

Excellent sturdy, easily transported lock. Fast delivery and very good communication from the seller. Unfortunately it seems to incompatible with most of my bikes, I bought it to secure my 1978 kawasaki z650 but it wound not fit in the hole in the disc or rear sprocket, wouldn't fit harley fat boy discs or bmw hs1100 wheels either. I'm using it on my triumph street triple 675 and it works perfectly. If you have a modern bike with normal discs don't hesitate to buy this lock, for somthing older or oddball do a little homework first. This would be a 5 star review except for the fitment issue.

Perfect, hard to use bolt cutters on it not easy to pick in public i expect, just check it will fit your disc first or it makes an excellent lock for a chain.Fast delivery.

The disk lock is heavy duty and fits the disc perfect. For the price it’s a bargain Oh and fast delivery as well.

Excellent service

I am very pleased with the roundlock. I only use it as a disc lock, added my own ‘Remove before Flight’ warning safety pin and it is great. I can sleep a bit better at night now
I was previously using an Oxford Omega disc lock, but these are ridiculously easy to break after checking-out some YouTube videos.
If I could improve it, I’d make the black plastic on it dayglo or red colour to be more noticeable as a disc lock.
Service was good, ordered it late on Monday and got it Wednesday.

I just got it. It feels really solid and well built.
It was delivered to dublin in few days.

Got this to go with a 14mm Pragmasis chain I bought a few years ago.
Fits very well through link with only small gap.
Centre pin is very thick so don't think it would be quick to cut with a disc cutter. I expect anyone would therefore go for the chain.
I had my doubts about its use as a disk lock but it does work on my bike with cast wheels - goes between the cast centre and the disc. It may not work for all types.
The lock itself is very smooth and easy to use.
Overall I'm very pleased especially at the price - you can't buy a better lock for that money.
Pragmasis were as usual very quick and efficient.

Chose this disc lock after viewing a bennetts presentation,no alarm on it,but the principal of it along with the size of the bolt that goes through the disc hopefully will be enough deterant to an oportunist thief,the service was fantastic,kept well informed,arrived on time,keep up the valuable customer service,hopefully be a customer in the future.

It just feels quality from the get go, intend to use as a disc lock for weekend trips and will get a chain for the winter. This lock fits the bill for both ,and as the man from Bennets said its very very difficult to get past it .. Perfect .!

This lock is fantastic. So easy to use and super solid. If anyone tried to cut it, it would just soon in the chain. Many thanks to David for helping me select exactly what I needed to secure my motorcycle. One key fits 2 round locks and a D lock. That makes life much easier. Highly recommended.

I use this lock as a front disc lock on my motorbike, its easy to fit and looks tamper proof due to the design. Small and easy to carry,very happy with this item and easy purchase with delivery updates. Highly recommend this lock and this company.

great seller .very quick delivery , very good strong lock. would recommend it . great all round service.

Great Lock!, because of the ball bearings and such if you leave this lock outside a lot it does need some oiling, but this lock is fantastic. An example of true engineering, doing a lot with a little.

5 stars for the lock and to this company, couldn't do enough for you and kept you informed all the way through.
For something so small I can not see how you would defeat this lock, it's tough, solid and awkward to even try and attack.

Not the first time I’ve purchased from this company. Good customer service as they make contact and let me know the status of my order and expected time. The lock is an addition to my bike for when I’m out. It looks very sturdy and not too heavy but also give me confidence that it will give thieves a good challenge if I ever leave my motorcycle for a short time. It was in my hands within 2 days. Thanks David.

Looks very sturdy and secure. Easy to carry as a disc lock as well. Would be even better if alarmed

Just bought this to replace my ss50cs lock for my 13mm chain, great fit, thank you David for the advice and great customer service.

Very high quality lock at a great price. I use it as a front disc lock when out and about. Short of a thief angle-grinding through your front disc, this cannot be removed by force. Fast delivery, and great comms.