For the four months that it lasted, even with almost daily use, I will give it 3 stars... In terms of durability, it's so-so, considering that one time I forgot to take it off and it blocked the disc brake, resulting in all the plastic parts breaking and the handlebar getting slightly bent, causing it to lock and unlock with difficulty. You can't really say it's the best... Therefore, after two weeks, the handlebar completely bent, making it impossible to unlock at all, and I had to use pliers to remove it until I eventually threw it away! In conclusion, it's decent for something temporary, but in the long run, it's the worst... However, it is definitely a deterrent!

It has an issue with the lock. The key does not easily fit into the lock and sometimes the protective flap gets stuck, preventing the key from entering the lock. It gives you the impression that the lock is broken and it will not unlock the disc brake. I do not consider it reliable, I do not recommend it for purchase.

It's fine, but for my KLE 500 disc brake, it is small in length, so I have to search every time to hit the piston hole on the disc brake. I should have measured it first.

For 20 euros, the lock is fine. The key had some difficulty fitting in during the first uses, but after some time, it fit more comfortably into the keyhole