Who doesn't want a lock and key system that works perfectly for all their needs? The hardened, nickel-plated steel used in the Tri-Circle Solid Brass Padlock makes it one of the most efficient and useful locks in the market. 3 key set is a great solution for all your self-storage needs. It can also be used as the main locks for gates, cupboards, doors, cabinets, etc. Built with a double-locking shackle that ensures safety, this lock and key set is made of solid brass construction that comes in regular and long (L) shackles.