This lock is the highest security Kryptonite U-lock available, featuring a 16mm hardened MAX-Performance steel shackle with double deadbolt design.Hardened MAX-Performance, 16mm steel shackle resists bolt cutters and leverage attacksTransit Flex Frame Bracket fits on the adjustable spline and allows for multiple off-set fitments to better align the lock for transportationHardened deadbolt locking for extensive holding powerHigher security disc-style cylinderKey Safe ProgramSecurity Rating: 9 out of 10Item SpecificationsAdvertised Weight4.35Cable IncludedNoDiameter16Length8Shackle Width4.0 Kryptonite New York U-Lock U-Lock UPC: 720018002154