12mm six sided chain links made from 3T hardened manganese steel for maximum strengthDurable protective nylon cover with hoon and loop fastenersIncludes the Evolution Series 4 Disc Lock with 14mm steel shacklePatented oval hardened steel crossbar for extra securityHardened double deadbolt locking mechanism for additional holding powerHigh security disc style cyclinder with reinforced anti-drill and anti-pull protection systemIncludes 3 stainless steel keys - 2 standard and one with light12mm 5`6`/167.5cmKeyBlack9 of 10UPC/EAN/GTIN: 720018999522