describe Quantity: one set UNBREAKABLE: The key box wall mount is made of high quality zinc alloy and heavy duty steel for excellent water, corrosion and weather resistance. Key safes are alloy castings high-strength zinc alloys that can effectively resist hammering, sawing or lifting. You can install it in front of your house, garage door, warehouse and office without having to carry your keys when you go out. Factor High Security: The key box adopts a 4-digit resettable password and has 10,000 custom password combinations. You can set your own password and change it regularly to improve security; installation is very simple, please take a photo or write it on paper after you set a new password, once you have forgot the password, the key safe will not work. Size: 11.5*9.5*4CM Package includes: 1 * key box