Our chain lock offers a higher security alternative to a cable lock while not compromising on flexibility or portability for short trips and low-medium theft environments. Perfect also for locking multiple bikes together on cafe stops or securing wheels when combined with a higher security lock like our Foldylock . 43"/110cm in length 8mm hardened steel links 5 digit resettable combination lock Heavy duty nylon cover protects your bike's paint How to set your combination: To change the code on your lock, use default code 00000 to open the lock. Then twist the black metal ring on the end of the combination selector clockwise 1/4 turn. Select your individual code by aligning the numbers with the protrusions on the lock body, rotate the black metal ring 1/2 turn counter-clockwise to set and close your lock.