Specifications: Material: Aluminium Alloy, Zinc alloy, Good quality steel plateColor: Shown as pictureOuter Size: Approx. 148mm*130mm*55mmInner Size: Approx.110mm*90mm*45mmPackage Weight: Approx.859gProduct Net Weight: Approx.777g  Features: -Durable material. Heavy duty aluminium alloy construction protects the box from being damaged by hammer, saw, drill and so on, impact-resistant, non-corrosive and weather-resistant.-High security. This product is an adjustable combinations lock with 4 dials. It can be converted to non-resettable mode for extra security.-Easy operation. It is easy to install and use. You can set your favorite numbers as your passwords. The 4-digit combination is easy to remember and reset.-Two ways to open. You can unlock it with a password. If you forget the password, you can open it with a key, which is safe and convenient.-Wide application. The key box can be used in many areas. It is suitable for outdoor use. --It can be fixed to a wall for emergency entry, vacation home, hotel ,etc.-Easy to install. Install with pre-drilled holes is super easy. All necessary mounting hardware is included: 4 screws and 4 nylon expanding wall anchors.  Package Included: 1 x Key Lock storage box4 x Screws4 x Nylon expanding wall anchors2 x Keys1 x Instruction manual