Features: The lock body is made of high-quality iron+zinc-alloy material, which is durable, rust resistant, and has a long service life. Three-digit password lock. The initial password is 0-0-0. It has high security and reliability. Easy to install: Installed with screws, it is very durable and has strong antitheft performance. Suitable for most wooden-doors. No keys required, enter the password and rotate to open. Don't worry about not bringing the keys anymore. It is suitable for keyless applications such as drawers, metal boxes, cabinets, and file cabinets. Specifications: Material: Iron+Zinc-Alloy Color: Black/Silver Size: 3inch/4inch (As Shown In The Picture) Package Includes: 1x Password Lock note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.