The Prime-Line S 4139 Diecast 5 Pin Hudons Keyway Mailbox Lock and Key Set makes it easy to secure your mail. It is designed for use with most mailboxes. The mailbox key set comes complete with a 5 pin mailbox lock, 3 cams, and 2 keys. These multi-cam assortments eliminate the need for individual locks. The mailbox key lock set is constructed of diecast, brass, steel, and stamped steel materials. It features a spring steel hex securing nut. The steel components come finished in a corrosion-resistant zinc-plated finish. The cylinder face comes in a nickel-plated finish. The lock is easy to install with a few simple tools. Please refer to the line art drawing for dimensions and compare with your needs before purchasing.