The Master Lock Solid Brass Padlocks feature a 44mm wide solid brass lock body that is strong, durable and resists corrosion. The 3mm diameter shackle is 11mm long and made of steel, offering more strength.The Limited Lifetime Warranty provides peace of mind from a brand you can trust. 20mm wide solid brass body padlock for durability and corrosion resistance. 3mm steel shackle fits most luggage zips. Set of 4 keyed alike padlocks. Limited Lifetime Warranty