HIGH-SECURITY DESIGN: Made from a 12.7mm hardened performance steel shackle, this bike lock provides maximum resistance against cutting and leverage attacks PATENTED LOCKING SYSTEM: Features a patented hardened double deadbolt design that gives additional protection against twist attacks, with a high-security disc-style cylinder, resistant to picking and drilling MULTI-FUNCTIONAL: This Kryptonite bike lock is ideal to secure your bicycles, sports equipment, gates, fences, tool boxes, ladders, grills, lawnmowers and more. Includes a 4ft 10mm steel looped cable for additional security SPECIFICATIONS: U-Lock interior locking dimensions are 3.25 in. x 7 in, 12.7mm steel shackle with a weight of 3.25 lbs. Bike lock security cable is 4 ft. (1.2 m) long and 10 mm wide in diameter. Includes three (3) stainless steel keys with an ergonomic design EASY TRANSPORT with FLEXFRAME-U BRACKET: Includes a versatile Flex Frame U-bracket for quick and secure mounting to your bike frame, ensuring convenient transport without the need for a bag or backpack