(Material) Our cam lock is made of zinc alloy, which is sturdy, precise, safe, and durable. (Cabinet Lock Setting) The initial password of the code lock is 000, and 1,000 combinations are available. You can change the password yourself. No screws are required to install the lock directly on the cabinet. When changing the password, always keep your hand on the code hole until the password is changed. (Code Mailbox Lock) Multiple code lock options for use in cabinets of different thicknesses. If your furniture is thicker, please purchase the extra-long spring bolt to replace your furniture. (Installation) Mailbox cylinder. No screws required, easy to install. (Application) Ideal for tool boxes, cabinets, drawers, mailboxes, school lockers or any other key-incompatible type.