This is the Giant SureLock Flex Combo Air Cable Lock 2.2mm x 108cm. This has a 3 digit locking combination which may be changed to your own preferred combination. This is intended as a super compact lock and provides minimal theft deterrent. Bike locks are essential as a deterrent to bike theft, but no lock is theft proof. Please research your own locking needs and buy the lock that best suits your environment and needs our customer service can help you in making the best selection.