Material:Our cam cam lock is made of zinc alloy material, strong, precision, safe and durable. Cabinet lock Setting:The initial password for the code lock is 000 and there are 1000 password combinations. You can change the password yourself. You don't need to install any screws to install the lock directly to the case. When changing the password, the hand should always hold the hole for the code until the password is changed. Code mailbox lock:Multi-code lock options for use in cabinets of different thicknesses. If your cabinet is thicker, please purchase the extra long spring bolt to replace your cabinet. Installation:Mailbox barrel. No screws needed, easy to install. Application:Ideal for tool chests, cabinets, drawers, mailboxes, school lockers or any other unsuitable type of key.