The KryptoLok ft a high security pick and drill resistant disc-style cylinder. Patented design makes lock-up easy & cam resists attacks by pry bars/hammers FEATURES a 12.7mm hardened performance steel shackle a New Patent-pending hardened double deadbolt design gives additional protection against twist attacks a High security disc-style cylinder is pick and drill resistant a Includes 2 stainless steel keys, with ergonomic design to reduce the amount of torque, and keep them from bending or breaking a New dust cover a Includes flexframe-U bracket providing convenient multi-location U-lock transport a Protective vinyl coating a 2 stainless steel keys a Key Safe Program a Product dimensions: 4" x 9" (10.2cm x 22.9cm) a Product weight: 2.9 lbs(1.32 kgs)