This lock is constructed of hardened steel and provides high security. Features: Secure disc-style cylinder resist picking and drilling Short crossbar and shackle create a compact fit providing better security Hardened double deadbolt design gives additional protection against twist attacks Hardened MAX-Performance, 13mm steel shackle resists bolt cutters and leverage attacks Transit Flex Frame Bracket system fits on the adjustable spline and allows for multiple, off-set fitments to better align the lock for transportation Includes three stainless steel keys - two standard "I" keys and one LED lighted key Reinforced cuff over hardened crossbar and cylinder protects high security disc-style cylinder Center keyway defends against leverage attacks High security Bent Foot design Security Rating: 9 out of 10