Features: • 12mm six-sided, chain links made of 3t hardened manganese steel for maximum strength • Durable, protective nylon cover with hook-n-loop fasteners to hold in place • Includes Evolution series 4 Disc Lock with 14mm MAX-Performance steel shackle • Patented, oval hardened steel crossbar for extra security • Hardened double deadbolt locking for extensive holding power • High security disc-style cylinder with reinforced anti-drill, anti-pull protection system • Sliding dustcover protects and extends cylinder life • 3 stainless steel keys -- one lighted with high intensity bulb & replaceable battery • Key Safe Program • Dimensions: 12mmx100cm • Security Rating: 9/10 • US$4000 ATPO