The Oxford Monster XL Chain and Padlock is an ultra-strong chain and padlock set and features construction of 14.5mm Hex chain Ni-Cro-Mo alloy steel, 1.2m (approx. 4') 12.20 lbs, 1.5m (approx.5') 14.40lb, 2.0m (approx. 6'6") 18.12lbs, 5 minute attack tested, cloth covered chain can be easily stowed under the seat, ultra-strong padlock with hardened boron steel armour casing, double locking mechanism, 16mmØ shackle, 3 x keys and key dust cover included.