Blackburn Local U-Lock Compact BlackThe Blackburn Local U-Lock is an affordable yet effective way to keep your bicycle safe. There are 2 spare keys provided in case you happen to lose one, or two. The twist proof hexagonal shackle deters thieves by increasing the amount of time to cut the lock by twice as much. The 10mm thick hardened steel is encased inside a rubberized sleeve to prevent scratching of the frame. Available in Compact 108 x 162mm, Standard 108 x 196mm, and Long 108 x 230mm.768686587153