Material: The code lock is made of zinc alloy, sturdy, precise, secure, anti-corrosion and durable. Setting: The initial password for the lock code 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 on the case.Password change, the hand should still hold the hole for the code until the password is changed. Installation: No screws required, easy to install, multi-coded lock options for use in different thickness cabinets. Application: It can be used for filing cabinets, mailboxes, drawers, lockers, shoe cabinets, staff cabinets, wooden cabinets, metal cabinets, etc. "This combination lock can be used on any wooden or iron cabinet door about 1-23mm thick at home, school or office. business, such as filing cabinet, filing cabinet, mailbox,Letters, lockers, shoe cabinets, staff cabinets, wooden cabinets, metal cabinets, etc.