This lock is made with the best security Kryptonite 16mm Kryptonium steel and double U-LOCK with a deadbolt design. Double securityincludes 3 stainless steel keys on oversized reinforced steel cross bar sleeves - 2 standard "I" keys and 1 LED Lighted Keyhardened Deadbolt Lock holds a wide range of powerhardened max-performance, 16mm steel shackles, bolt cutters and utilizing attackshigher security disc-style cylindersecurity rating: 9 out 10 transit flex frame brackets with multiple offset splines. Fits items Locked into specificationsgenre8diameter16lock stylekeyedshackle width4.0advertised weight4.35cable includedno