SOLID CONSTRUCTION: This lock box for house key is made of strong and durable aluminum alloy material, sturdy, unbreakable, have a long time use : All-metal high strength alloy material makes this lockbox for keys safe and , no breaking, prying or stealing issues, the protection waterproof cover prevents from water and dust EASY TO INSTALL: Easy to install the key lock box for outside on wall or door with the included mounting hardware, no power source required EASY TO SET CODE: Remove the inside white plastic cover and turn the screws to the code, and replace the cover, the combinatinon password code is changeable as your demands WIDE USE: This key lock box is versatile, you can keys or others little items in the key cabinet for indoor or outdoor, apartment , office, warehouse, garage etc. Perfect owners, family members, landlord, vacation rentals, property management, realtors etc. for children after to school, access, emergency access, gardener, cleaners etc. Colour:dark gray Material:aluminum alloy Size: 105 x 65 x 48mm Package Contents: 1X Key Lock Box 4X expansion tube & screws 1X key tool 1X English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.