The 15m monster thatcham approved chain amp padlock combines a 14mm ni cro mo hex link chain and an ultra strong padlock with hardened boron steel armour casing for maximum protection against attack the thatcham institute for vehicle security is recognised by insurers as the ukrsquos leading tester of vehicle security products products with the thatcham label have been demonstrated to comply with the british insurance industryrsquos criteria for vehicle security the toughest set of st