Why buy this D-lock and not another brand? This is a motorcycle grade lock with a 16mm shackle the Record 42" boltcutter can't crop. Other locks may have a cropable shackle, if the shackle is 16mm or bigger it should not be cropped but these locks is higher priced. Sometimes it can be hard to compare locks if they are not tested, but I believe that this lock is hard to defeat.

Both the large and small DIB lock purchased as they offered greater flexibility than a padlock to secure some machinery with the 16mm chain. Reassuringly sturdy and very smooth to operate. Would not hesitate recommending.

Purchased DIB lock and IImm chain with noose link for carry on motorcycle security. Chose this package as it enables lots of different combinations to lock motorcycle to either immovable objects or through the frame and wheels. Despite 11mm chain not being recommended for carry on security,(I chose it for weight and packaged size to carry on my motorcycle), the quality and overall visual deterrent is outstanding, as is the DIB Lock. I have great confidence in Pragmasis products having previously purchased lock and chain for home security. Thanks for providing these fantastic products.

As the owner of a specialist electric bicycle costing as much as many motorcycles and more awkward to lock than many bicycles, I purchased both sizes of DIB D-lock along with a 1.5m noose end 13mm Protector chain and RoundLock package, 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 and well-made they feel and I especially like quality features like the DIB sliding keyhole covers.

Together they definitely make up for only having bottom-of-one-wheel stands available as locking points in my building's communal cycle garage.

If I had access to standard Sheffield stand bike parking with multiple locking points at home, the chain would be unnecessary - the DIB D-locks have a higher Sold Secure rating than any chain with a low enough weight to not risk bending bicycle spokes.

My static security strategy uses the larger DIB to lock the rear wheel and one chainstay to the wheel stand, secures the noose end of the Protector chain to the same stand and then pulls that through the smaller DIB D-Lock and the front wheel, locking that D-lock to the frame and through the last link in the chain, forming a tight 'figure 8' around the front wheel.

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

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

For shorter stay parking, the battery remains locked to the eBike. There's space inside even the smaller DIB shackle to fit frame, wheel and stand, but a step-through frame and seatpost-mounted battery limit possible locking points making it very awkward to secure both wheels to the frame and stand in this way.

To work around this, I use a folding lock (or flex cable) and my bike's built in frame lock as secondary security for locking the wheels to the frame. I can then use the DIB D-locks to 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.

The larger DIB fits around both seatstays and a Sheffield stand.

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.

I bought the 190mm DIB lock as a mobile security solution. It feels sturdy and the rubber on the shackle is thick enough to protect paint work on the wheels. Lock operates smoothly. Definitely worth the money.

I have the larger d-lock. Works well so far and a good price.

Awesome product and service guys thank you so much. I bought two of these and use them every day in Central London. Solid quality feeling lock.

I have the 190mm x 87mm lock and have been using it, every day, for just over a month. The quality of this lock is obvious. I can't recommend this lock enough.

Great product and superb customer service, thank you very much.

Bought this to compliment a 16mm chain. works easily in use and to fit round the frame on the bike. well constructed solid function looks good with professional finish.

Great Quality, I bought also another shackle. Thank you

I use this in conjunction with a front disc lock as my overnight security. Fits nicely through my rear springs and rear wheel spokes. 4 starts as the internals are prone to rust and seizing every ~6 months, so could do with some rubber seals to stop water getting in. [Pragmasis Comment: I do not know of any cases of a DIB D-Lock suffering internal rusting problems. Is it actually the DIB or the other lock that you are using that has rust problems??? Please could you get in touch with us so we can investigate? I'm sorry I can't tell who you are from "Mr. L" so I can't make contact proactively from our side. Thanks, Steve.]

First lock that was delivered unfortunately had a fault but Steve was quick to address the issue and get a new one sent out, can't ask for much more really. The lock feels solid and has some weight behind it unlike others I've looked at.

When you look at other 'high quality' U locks on the market from the big named brands there all €100+. Anyone with a decent bolt cutters can come along snip it in silence and drag away your pride and joy. Great to see a U Lock that can finally not be snipped and only for €55? Steal

Haven't had it put to test yet, but looks and feels very substantial, Thieves should have a hard time removing this.
Ordered and delivered in a couple of days.

Substantially well made D lock arrived today only 2 days after ordering. Tracked all the way by DPD, this is the fourth quality product supplied by Pragmasis, thoroughly recommend them for your security requirements.

I have two of these and the build of them is excellent
Very strong with a 16mm shackle that’s available in two lengths, plus available to purchase separately.

I've been riding nearly 30 years and in that time security has become an absolute essential especially in my high risk area of Islington N1.
These D locks are fantastic quality and the customer service I received was exemplary. I wouldn't hesitate to recommend these to fellow bikers and as soon as I have the spare cash I will be purchasing their 13mm 1.2 noose carry chain that I got the D lock to go with.
A big thumbs up!

I have been using the biggest of the DIB-D-Locks for over two year in Berlin. Nobody has even attempted to steal my bike during that period. What is more, the Lock is still fully functional without any issues. If you have a bike rack, there are some solutions on the market which can be used as a holder for the lock - I my self am using the "Trelock ZB 403 3-Point Lock Holder" which is very good and can be had for around 15€.
Lastly, the company and its customer service are so nice and worthy of your business that I will never buy a product from their competitors.

Just received a pair of these locks. They should at least slow down any would be thieves, if not put them off all together.

First rate service from SFB and excellent comms from initial phone enquiry to delivery.

Service and advice was first class and i’m blown away by the quality of the two Diblocks.
I got them to use on my TMax in London. They are super robust, hi viz and definitely a deterrent to your average scrote bike thief.
Fingers crossed!!

Placed an order for a D-Lock and an extra shackle. The extra shackle was out of stock but I was contacted promptly to let me know this and the D-Lock was dispatched immediately with the extra shackle to follow when in stock at no extra cost to me. I was kept fully informed through out the process. I couldn't be happier with the customer service.

The product itself is also excellent. Very solid feeling and the shackle has a good thick rubber coating so it doesn't scratch the bike. It locks smoothly.

Overall, I am very happy with my purchase and the service I received.

Got two of these for the back and front of the bike. Really well made and the order turnaround was quick

I am looking to bulk up on bike security and would definitely use Pragmasis again.

(English version below)
Compré 2 D-Locks con las mismas llaves (3 por cada candado; so 6 in total). Había visto vídeos en internet de lo complicado que es abrirlos y cortarlos. Efectivamente, el acabado es de altísima calidad y la medida de 26cms es perfecta para la horquilla de la Suzuki DL650 Vstrom. Lo uso también en Honda NX 250 Dominator y va perfecto, aunque con los radios un candado de U es siempre más incómodo de poner. Muy bien empaquetados (podrían venir copas de cristal sin sufrir daño), me remitieron número de seguimiento con DPD desde UK a España y la entrega fue muy rápida. Los recomiendo sin duda.

(English version)
I bought 2 D-Locks with the same keys (3 per padlock, so 6 in total). I had seen videos on line about how hard to pick up or cut they are. Definitely, they are a top quality product and the 26cms size fits perfect on the forks of the Suzuki DL 650 VStrom. I also use one on a Honda NX 250 Dominator and it fits great, although due to the spoke wheels it is always more uncomfortable to put it and out. The parcel was really well packed (they could have sent wine glasses with no damage), I had a tracking number to follow the shipment from UK to Spain and delivery as very fast. I definitely recommend the purchase.

Been using this on my rear wheel, through the sprocket and spokes, fits perfectly.

I placed my order on a Saturday, right before the Christmas holiday season, with a destination address in Germany. The locks already arrived on Thursday (and it would've been Wednesday if DPD didn't mess up the delivery) -- this is excellent. Shipping cost was still reasonable.

The D-Lock quality is superior beyond question. I'd order any time again, thanks a lot!

Ordered one afternoon recieved next day impressed with the solid build of this d lock,already have abus granit which costs more and this is better imho,going to invest in the chain so I use on garage anchor and when on road the lock is mobile,great communication from minute I ordered to delivery this is an example to others top notch.

Very impressed by the DIB D Lock. Points to note:

1. Easy attaching and removing of the shackle to the lock body. I've used a number of D locks in the past, and this is one of the smoothest to insert and remove the shackle from. No sticking and no fuss.

2. Excellent coating, to prevent damage to my bike.

3. The little switch/cover to stop the keyhole being exposed to the elements is a very welcome addition. I have had to wash out, and then WD40 and lubricate, keyholes of other D Locks which didn't have keyhole covers countless times, and the fact that the DIB D Lock has a cover for the keyhole makes having to do this far less frequent which is handy.

4. Well machined and smooth, no edges to catch on clothing. I carry the smaller one in my jacket pocket for when I'm out bicycling, and it's no problem.

5. Effective 16mm thick shackle, which is nice and strong, wider than a lot of other D Locks I have used.

6. Keyed Alike is a godsend, it means I only have to carry 1 key for the locks at home and work, for both motorcycle and bicycle.

This is beautifully made. Solid without being too weighty and very slick and easy to lock and unlock. Secure Gold accreditation- enough said

Versatile lock with several options on shackle length. Gives flexibility for use with chains. Top class service from and customer contact from Pragmasis!