MAGNUM PADLOCK - Keyed Alike. Tough cut octagonal boron carbide shackle is 50% harder than hardened steel. Maximum shackle clearance for more uses. Dual Armor protection: 1 3/4 laminated steel core for strength surrounded by stainless steel & zinc outer components for weather resistance. Dual ball bearing locking for maximum pry resistance. Reinforced body bumper for scratch resistance. 4 pin cylinder for maximum pick resistance. Best used for: residential gates and fences, sheds, workshops, garages, storage lockers, tool chests and tool boxes.