Kryptonite New York Standard U-Lock with Flexframe bracket Sold Secure GoldUltimate security from Kryptonite for bicycles, eBikes and powersports Features: 16mm hardened max performance steel shackle Patent pending hardened double deadbolt design gives additional protection against twist and cut attacks Highest security disc style cylinder is pick and drill resistant Sliding dustcover to protect from dirt and debris 3 stainless steel keys including new design and one led replaceable key fob Includes Flexframe U bracket