Keeper Bike U-Lock Standard with Braided Steel Cable, Heavy Duty Anti-Theft Bicycle U Lock, 12mm Shackle and 10mm x4ft Length Security Cable with Mounting Bracket and Keys | bike-locks

This bike lock has served me very well over the years, very happy with quality and durability.

Really good and heavy strong lock

I was wary of buying this because of the reviews claiming the lock was fiddly to use with the key. I went ahead anyway, and I'm glad I did because it's a really decent lock for the price. Lots of people have said that it's too small, but I've had no trouble at all fastening the lock around a rooted post and my back wheel so it's plenty secure, and it's a standard sized bike. The fact that the base of the lock actually detaches makes it easier in my opinion, though this is something others seemed to dislike. The only reason I've gone for 4 stars instead of 5 is because I *did* have an incident with the key not working very recently, which is what I assume others were talking about, but I was able to see exactly what the issue was and know how to prevent it in the future (hopefully!). Basically, the best way I can think to describe it is that the channel of the lock is made up of segments that, when you put the key in, all twist at the same time. However, when you pull the key out after locking, if you slightly twist the key at all it twists those top few channels, but not the lowest ones. As a result, it's then hard to put the key back in, because the channel is no longer straight (I hope this makes sense!) But the fix is literally just to put the key in as far as you can get it, then twist gently until the channels re-align and you can push the key in all the way. I know that sounds complicated, but it's really not, and if you just experiment with the lock when you receive it, you'll see what I mean and how easy it is to resolve. If I end up having this issue again and it's worse, I'll edit my review, but for now I would say don't let the other reviews put you off. It's a good size, sturdy, and not tricky to use once you suss it out. Also, I noted that some reviews criticised the lock because their bike got nicked, but based on the photos they had secured the bike with the provided cable and then closed the cable with the heavy-duty lock. This is NOT how you lock a bike! Never have the wire cable as your primary source of security – secure the back wheel of the bike to a rooted post and, if you want the extra security, you can loop the wire through your front wheel.

Very safe!!

This is absoloutly great. The only problem is since I am using it outdoor, the tips started to rust after no longer than 6 monthes, and it made it slightly harder to lock and unlock.

Secure and does the job

Exceptional product.

I quite like it. Works for its intended purpose, I wish the cable was easier to fold up so it did not become so annoying between the legs. The u-lock does swing a lot after mounted and it does become an annoyance when biking. I will keep updated if anything should happen to the lock, but for now it seems to do it’s intended job! Hard to mount back on.

It was Nice while it lasted. After a month, the lock mechanism kept getting jammed. I returned it

Veo las muescas de que lo han intentado romper varias veces, pero no lo han conseguido. Mi bicicleta duerme en la calle y tras un año en la calle se ha oxidado, cierra peor pero sigue funcionando.

Good matrial, recomend it

Excellent lock. Very strong

We have had our kids bile stolen a lot we live in a apartment so we got this and it’s never been stolen and it is made of good quality