EXTRA LARGE CAPACITY-Large key safe lock has extra large space(inside size around:4.3*3*1.6inch)which you can place multiple keys like spare house keys,car keys, door security card. More storage than conventional key lock boxes. You can put your house keys or car keys in it when you go to work or on vacation. .HIGH SECURITY-Outdoor key safe adopts hard aluminum alloy for durability and this metal material is rust-proof, waterproof and corrosion-resistant. High grade aluminum alloy will protect the box from hammering, sawing. The protective cover protects combination dials from unpredictable weather. The surface of combination key lock box is made of environmentally friendly material that is not harmful for humans or pets. .PRACTICAL-Key safe provides 4 free screws and 4 expansion plugs that are used for fixing on the wall. The manual will offer you some useful guidance to use this product. By using the lock box key, you dont have to store your keys near the gate or under the items, which is extremely unsafe for your home. The password lock is ideal for house, emergency entry, vacation home, pet sitters, and office.