Kryptonite kryptolok series 2 std u lockthis is an affordable u lock perfect for securing your bike in moderate risk areas it is made from 13mm hardened steel and the internal mechanism has been reinforced to provide increased security from different styles of attacks team this with a cable lock for all bike protection as a leader in action sports security and the creator of the original bicycle u lock in the bicycle security category in 1971 kryptonite offers premium quality security produc