Material: high quality zinc alloy material. Size: 30mm (suitable for 13-25mm board): 46*37mm. Scope of supply: 1 combination lock. 1. High-quality material: The lock is made of high-quality zinc alloy material, chrome-plated, anti-corrosion, no rust, no breakage, and durable. 2. Easy to use: This lock has a 3-digit password, the original password is 000. You can make changes as described in the product description below. 3. Convenience: With this secure mechanical lock, you no longer need to carry your keys with you or worry about losing them. 4. Wide application: suitable for toolboxes, cabinets, drawers, mailboxes, school lockers or other places that are not suitable for keys. Replacement lock for locking any type of sheet metal door, ideal for letterboxes, lockers in workshops, display cases or steel cabinets. 5. Beautiful appearance: beautiful appearance, simple design, small and cute. The lock is keyless, more convenient and more secure.