Kasp K12540A4 Premium Brass Padlock - 40mm - KA25404. Features a hardened steel shackle for extra protection against hacksaw and cropping attacks, and a double bolted locking mechanism for increased resistance against torsion and pull attacks. The solid brass body offers added resistance against corrosion. It has a 5-pin cylinder with anti-pick mushroom pins for enhanced protection against picking and a paracentric keyway for improved manipulation resistance. Comes with a 10-year guarantee.