The main body of each safe key box is made of high strength aluminum alloy, anti-corrosion and anti-rust the excellent effective, durable. The high quality aluminum alloy body can protect the key box from hammering, sawing, thus securing your belongings from theft. . & The capacity of our key box is large enough. : 7cm(L) x 2.5cm(W) x 8cm(H)2.76"(L) x 0.98"(W) x 3.15"(H). : 7.5cm(L) x 3.5cm (W) x 9.5cm (H)2.95"(L) x 1.38"(W) x 3.74"(H). Key box Portable mini size large internal space allow you to store multiple keys and you can also store small things if you need. . Secure key box with removable handle. You can hang it exactly where you need it, Indoor and outdoor use, such as door handles, on gates, fences, cars or anywhere else. Without installation tools, because no need to fix it on the wall, remove it any time, just like a normal padlock. . The key safe consists of a 4-digit password, there are 10,000 possibilities. The 4-position combination lock is ten times more secure than the 3-position combination lock, so don't forget your password. You can choose your favorite number from 10,000 different combinations and easily set or reset your password in minutes. . Outdoor security key box is small and portable, with a wide range of applications, unrestricted, exquisite and durable. Suitable for indoor and outdoor use, Can be applied rental (Airbnb), garage, office, school, warehouse etc. offers one year warranty, lifetime customer service. If you are not 100% SATISFIED with the code key box, please contact us at any time. .