Standardized letterbox lock in steel, quality chrome metal alloyCam lock for letterbox sheet metal doors. Sequin barrelBody length 25 mm, diameter M18Supplied with 16 keys and 8 pieces Camshaft barrelSuitable for most mailboxes, the drawer, cabinet, closetMailbox Cylinder Material: aluminum alloy. Body length: 25mm. Head diameter: 18mm. Small and safe: For mailbox, drawer, closet. Included in delivery: 8 * Standard Mailbox Lockeach lock has same keys 16 * keys. Note: This lock is not post approved. If you are not satisfied with the products when you receive the package. You can at any time, we will offer you a good solution. To ensure security, the key can only be removed in the locked state. Install a new lock Place the cylinder in the door Test with the key to position the cylinder correctly and check that the door can be closed Then screw the nut with a key and tighten well Your new lock is correctly installed