Kryptonite Krypto Keeper 12 STD w/Brkt 4"x8" is made with a hardened steel shackle that resist hand tools. A reinforced collar over keyway is included for increased protection as well as a click style transportation bracket for added convenience.
Kryptonite offers an anti-theft protection program with certain bike locks. When you register this lock with them here, they guarantee it within the U.S. & Canada for bicycles up to $2,000 and in the U.K. for bicycles up to £900. You can rest assured your bike will stay safe with a Kryptonite lock.