Kryptonite evolution series 4 long u lockthis is a strong u lock perfect for securing your bike in moderate risk areas it is made from 14mm hardened steel and the internal mechanism has been reinforced to provide increased security from different styles of attacks it is vinyl coated so that it does not scratch your frame a dustcover protects the cylinder and ensures that the lock is weather proof team this with a cable lock for all bike protection as a leader in action sports security and th