Parcel arrived in The Netherlands in two days.
The 13mm chain 1,2m length is light enough to be carried in a pannier.
Except for the 13mm chain I also got the 16mm and two keyed alike D-locks. Various ways to use the D-locks, I think they provide more flexibility than padlocks.
Note that 16mm is quite heavy - to be used only for home parking.
All products seem very high quality.

Delivered on time, and perfect for protection of my 3 expensive bikes

Ground anchor, a 2 Metre x 16mm chain and PIN lock.
I have searched the web (eBay, utube, Google, etc.) and I could not find anything better (or equivalent) for cheaper!!
OTHER 16mm chains profess to be “uncroppable” but there are posts and videos that prove otherwise.
I only ever want to buy this kit once, and I hope it is never actually needed. The cost is cheap when compared to a loss of a valuable item, the damage caused, the trauma of the violation and the peace of mind of a purchase that will offset this risk.
I am really looking forward to your kit arriving (in a very nerdy way!)
Thank you so much for your help, technical advice and enthusiastic attitude.
signed - Ex-metallurgy & heat treatment in aerospace.Industry.

I have a pair of these.
I use them for additional security at home and as a carry chain for portability.
A good balance between protection and weight.

Ordered on the Monday, delivered on the Tuesday. Great communication too. Chain looks solid. Recommended.

I'm impressed with both the chain and the service.

Got the 1.5m 13mm and it feels solid and secure, especially in combination with the round lock. Reasonable compromise between weight and portability. Feels much more secure than similar priced items from competitors.

David is the best! He offered a lot of advice on the different security options and was super helpful answering my (maybe a bit too many) questions.

The chain arrived promptly, looks exactly as advertised, and David was very helpful in giving a heads up about when to expect delivery, etc. Would highly recommend.

This is a great chain for bicycles. More practical than the 16mm as this will fit throw the wheel spokes a bit easier. This is the second one I have bought and the quality and service has been great from David. The keyed alike facility is excellent too and David was very helpful. Fully recommended.

I ordered the longer 2.5m chain to replace a shorter one due to acquiring more bicycles and the new chain is of the same high quality as the previous one. It works very well with the Torc ground anchor and Squire lock.

Speed and helpfulness of Pragmasis service can't be faulted.

Okay, the above setup is heavy to cart around, but there seems no avoiding that. By using an Anti-pinch Pin and a 13mm chain with a noose ring at one end, you can at least get away with a shorter chain. Two tips, though:

1. 13mm chain MAY not quite slip over the pin. Either order 2x links of 16mm chain (one slips through the first 13mm link and over the pin, the other stops the first link pulling right through), OR use a small sharpening stone in a drill to shave just a whisker off the inside of the first 13mm link in a small area.

2. Maybe order a long enough chain to go up and over the seat, so it's held off the ground (1.2m noose chain doesn't allow this, although it may still prove a good choice - not used it much yet).

Hope that helps.

Beautifully made, with a high quality sleeve. I am using it with the round lock from the package deal. Great website to help guide you to the right choice. Actually the various tips are helpful in getting maximum security. Who knew this topic could be so interesting!

I have no worries about the security of my high value bikes with this chain coupled with the Torc ground anchor and Squire lock. Brilliant!

I opted for the (still quite hefty!) 13mm chain to carry it on my motorcycle. All my research indicated that Pragmasis was the best supplier for effective protection and good value. Delivery was next working day. Excellent service & highly recommended.

I am really impressed with the quality of the product and the efficiency of the company. Fantastic!

Great value for money and excellent service

After being so impressed with the 1st chain I ordered I purchased this one as extra security. Super fast delivery and excellent quality

Now got 4 metres of this bad boy holding onto the ever growing cycle fleet as a secondary level of security. If the scumbags manage to get through this after level 1 security, I will give them the bikes myself!

This is an excellent heavy duty chain and lock. I feel confident that it will protect my bike. At the very worst, it will slow down any thief.
David gave me excellent advice, changed the chain after I'd ordered the wrong one and provided a number of security tips.

I purchased the 13mm chain and Roundlock package deal to protect my bicycles in the garage. I received excellent advice on the appropriate size to go for, and once i'd placed the order I had it in my hands well within 24hrs so the service was absolutely spot on. The chain itself is a beast, looks and feels incredibly secure when used in conjunction with a wall anchor, and i'm sleeping much better since installing it. I'd say someone is going to have to make an almighty effort to defeat this. Recommended!!

Its just as described in the video and supplied by a very helpful company which delivered it very promptly. I just hope it never has to be tested but expect it to stand up to most assaults. All round good value.

I bought 2 meters of this and use an Abloy 626 padlock, although a bit heavy to carry around I find it only a slight inconvenience compared to losing my pride and joy, this setup will stop all but the most well equipped determined theif. Excellent, speedy service too!

Just finished securing my two bicycles with the 13mm protector chain. Its massive. A 1,5m chain was enough to lock the bikes to a ground anchor. I thought of the 16mm version, but that might have been to heavy for the bicycles (something to consider - spokes and carbon fibre parts).
Excellent customer service, fast shipping.

I was after a chain and padlock to secure my motorcycle to an Oxford Rota Force ground anchor. Unfortunately the loop in that anchor won't accept a 16mm chain so I opted for the 13mm chain. The added advantage of this is that is fits through the hole in the rear axle,of my R1200GS. I feel this is a better option than threading through the frame as well. I bought a package with the Squire padlock as well - and a great padlock it is. I wish I had checked this company out beforehand then Inwoikd also have bought their Torc ground anchor - bugger! I purchased a 2m chain and would definitely recommend getting a slightly longer chain than you think you need to give more flexibility. The service from Pragmasis was fantastic - personal emails to advise of despatch and ordering. I didn't call them, but I am sure they would offer the right advice to ensure you choose the right solution for your needs.

Having just retired we decided to purchase 2 new Electric Bikes. These will be kept in an outbuilding on our property. We purchased a 13mm protector chain which is fastened with an anchor to a brick wall, the other end connected to a good quality Abus D lock. The chain is top quality with a sturdy sleeve. It would probably be too heavy to carry on a bike but as it is a permanent fixture weight doesn't matter. Although the chain is fairly expensive (as are the Abus D locks)in security you only get what you pay for. Cheap products are a false economy. Very satisfied customer.

Ordered the 13mm 1.5m chain to carry in my motorcycle tail pack. Fantastic chain, received the next morning. Excellent thanks.

I ordered 1,2 meter 13mm chain with a noose chain at the end for my bicycle. 1.2 meter is enough for most uses and the noose adds a lot of versatility. Very well made, I'm a happy customer.

This is the second time I've ordered a 13mm chain and SS50CS padlock. I've had the same set up protecting my mountain bikes for the last couple of years, with a lot of reassurance provided by them. A new bike meant some additional security was required.

The service from Pragmasis has been exceptional. I asked for a 'keyed alike' lock to save confusion. David kept me up to date throughout the ordering process, explaining timescales, etc. The chain and lock arrived quicker than expected but an early email notification meant I could ensure someone was home to accept the delivery.

Absolutely spot on service and a product that I feel I can trust to do its job. So much so that I recommend Pragmasis whenever anyone asks me about bike security.

A well made chain and lock, very reassuring knowing I have this fitted. Top service from Security For Bikes too.

Excellent service and very good communication via email.
The chain is very solid and quite a lot lighter of the 16 mm one. A good compromise to be brought around on your bike

This is a very tough chain which seems of high quality. The covering protects the frame and is of adequate length to wrap around my three most valuable bikes.
It was bought in conjunction with the Torc ground anchor and a Squire SS50CS Stronghold Padlock, and has been installed in my garage which has a flimsy door. Total cost was £175 and should deter almost all potential burglars. Compare it with £500/annum for bike insurance and it's a no brainer.