Many u locks and heavy duty locks are in fact heavy, clunky and can scratch your bike, only about 5% of stolen bikes are returned to their owners - most buyers of bike locks don't use them because they have forgotten the combination or they have lost the key you know you are always secure with the trusted SafeBest brand - lightweight in design and out of the way when you are riding - this lock will greatly reduce the chances of your bike being stolen - keys "Short And Circle" design so your key inserts, turns and easily unlocks every time.