【GOOD QUALITY】Mailbox lock made of high quality zinc alloy, no rust, durable for long time service. 【PACKAGE INCLUDED】The package includes 10 pieces mailbox locks, the size is 30mm, each lock with two different keys, total 20 keys. 【EASY TO INSTALL】The mailbox lock cylinder with key, cam nut and screws, easy to install and turn 90° to open. 【WIDE APPLICATION】The furniture lock is suitable for filing cabinets, storage cabinets, drawers, tool cabinets, mailboxes, letter boxes, wooden door, metal door and glass door.