The Kryptonite Standard Lock features new patent pending hardened double deadbolt design gives additional protection against twist attacks and a 13mm hardened Performance steel shackle resists cutting and leverage attacks  Kryptonite Standard Lock Features High security disc-style cylinder is pick and drill resistant Anti-rattle bumpers reduce noise during transport New dust cover Includes Transit FlexFrame-U transportation system which allows for versatile carrying Protective vinyl coating 2 stainless steel keys Key Safe Program Rated 6/10 on Kryptonite’s security scale