Kryptonite New-U New York LS Heavy Duty Bicycle U Lock Bike Lock 16mm hardenedMAX-PERFORMANCE STEEL SHACKLE Patent-pendingHARDENED DOUBLE DEADBOLTdesign gives additional protection against twist and cut attacks HIGHEST SECURITY DISC-STYLE CYLINDERis pick and drill resistant Sliding dustcover toPROTECT FROM DIRT AND DEBRIS 3 STAINLESS STEEL KEYS- including new design and oneLED REPLACEABLE KEY FOB Key Safe Program Protective vinyl coating Product dimensions: 4 x 10.25 (10.2cm x 26cm)