Padlock Brass 3 keys 5-pin tumbler locking mechanism 9mm thick hardened steel double-locking shackle Size: 60mm Tessi 60Mm Solid Brass Padlock | Te60 The 60mm lock is constructed from solid brass and comes equipped with a 5-pin tumbler locking mechanism. The 9mm thick hardened steel double locking shackle makes it resistant to cutting and prying and the rubber ring around the shackle helps prevent water ingress when used outdoors. Each lock comes with 3 brass nickel plated keys as standard.