Kryptonite New York U-Lock Highest Security When you need the highest security for your bike, you'll want to grab a U-lock. The Kryptonite New York U-Lock is Kryptonite's highest security U-lock available and features a 16mm hardened MAX-Performance steel shackle with a double deadbolt design. The Transit Flex Frame Bracket fits on the adjustable spline and allows multiple offset fitments to better align the lock for transportation. Features Hardened deadbolt locking for extensive holding power Hardened MAX-Performance, 16mm steel shackle resists bolt cutters and leverage attacks Transit Flex Frame Bracket fits on the adjustable spline and allows multiple offset fitments to better align the lock for transportation Specifications Shackle Length8"U-Lock Diameter16mm Shackle Width4"Cable Included No Lock Style Keyed Security Rating9 out of 10Weight4. 35 lbs | Kryptonite | New York U-Lock W/bracket