13mm hardened performance steel shackle New Patent-pending hardened double deadbolt design gives additional protection against twist attacks High security disc-style cylinder is pick and drill resistant Includes 2 stainless steel keys, with ergonomic design to reduce the amount of torque, and keep them from bending or breaking Includes Flexframe U-bracket providing convenient multi-location u-lock transport New dust cover Protective vinyl shackle coating 2 stainless steel keys 13mm 5x9`/12.7x22.86cm ATB Blk/Gry 6 of 10 IncludedUPC/EAN/GTIN: 720018002055