The Kryptonite KryptoFlex 1018 Key Cable is a secure and robust bike lock and comes with two steel "I" keys. An affordable U lock for moderate crime areas12 mm hardened steel shackleReinforced collar over keyway for increased protectionHigh security disc style cylinderHigh security Bent Foot designIncludes side mount and snap-in bracket2 stainless steel 'I' keys that are more ergonomic and reduce the amount of torque being applied, to stop them bending or breakingDimensions: 5/16?? (8mm) cable diameter 5 (150cm) cable length