Master Lock Magnum 1-3/4" W. Dual-Armor Keyed Alike Padlock with 1-1/2" L. Shackle (4-Pack) exceptional security with its Dual-Armor protection, featuring a laminated steel core for strength surrounded by stainless steel and zinc outer components for superior weather resistance. The tough-cut octagonal boron-carbide shackle is 50% harder than hardened steel, providing enhanced durability. This padlock includes dual ball bearing locking for maximum pry resistance and a reinforced body bumper to prevent scratches. Its 4-pin cylinder increases pick resistance, ensuring your belongings stay secure. Please note, this padlock is keyed alike only within a full case of six, with each case having different keying. Backed by a lifetime , this 4-pack is an excellent choice for reliable protection. Model Number: M1XQLFHC