The KryptoLok features a high security pick and drill resistant disc-style cylinder. FEATURES: Patented Anti-Rotation Double Deadbolt shackle helps fight against twist and cut attacks Includes Transit Flexframe transportation bracket Includes Kryptonite KeySafe Program 12.7mm hardened performance shackle resists cutting and leverage attacks Patented Anti-Rotation Double Deadbolt shackle helps fight against twist and cut attacks Reinforced hardened cross bar design gives more protection for the lock internals Anti-rattle bumpers reduce noise during transport Includes Transit FlexFrame-U transportation system, which allows for versatile carrying Key Safe Program Security Rating: 6 out of 10 SPECS: Bracket: Included Shackle Width: 3.25 Advertised Weight: 2.45 Length: 7 Diameter: 13 Lock Style: Keyed