The Kryptolok Mini 7 Bike Lock uses a hardened performance steel shackle at 12.7 mm with a new patent-pending hardened double deadbolt design to resist cutting and leverage attacks. Included is a Transit FlexFrame-U transportation system which allows for versatile carrying and features a protective vinyl coating. The stainless steel keys have an ergonomic design to reduce the amount of torque to keep them from bending and breaking. | Kryptonite KryptoLok Mini 7 Bike Lock