The ultimate chain lock for high theft areasKey Features:14 mm six sided hexagonal chain links made of triple heat-treated boron manganese for the ultimate strength in a chain,Narrow inner width of individual links defends against leverage attacks,Includes maximum security New York disc lock with 15 mm ovalised hardened steel shackle,Hardened steel sleeve over crossbar for double security,Double deadbolt locking for extensive holding power,Sliding dustcover protects cylinder,Durable nylon protective cover prevents scratching your precious equipment,3 keys: one lighted with high intensity bulb and replaceable battery,150 cm/ 5 feet long,Approved to Gold Sold Secure standard,Approved to Thatcham CAT3.