Kryptonite Kryptolok Series 2 ATB Bicycle U-Lock (5-Inch x 9-Inch) Kryptonite Series 2 Bicycle U-Locks with 13-millimeter hardened performance steel shackle High security Bent Foot design; enhanced internal engineering to resist cutting and leverage attacks Offset key location and overhead cam locking mechanism Patented deadbolt locking mechanism; pick/drill resistant disc-style cylinder Includes: EZ Mount Transportation Bracket, two keys (one "I" key), and $1,500 Anti-Theft Protection Coverage