The Stack-On Quick Access Safe with Biometric Lock is designed with a solid steel-plate body and a pry-resistant steel plate door. The easy-to-use biometric lock can accept up to 28 different fingerprints and provides great security. A back up trouble key is included as well. The shelf is removable, allowing you to customize your needs for storing pistols and other valuables. Foam padding on the bottom and shelf prevents scratches on the safe's contents. With the included mounting hardware, this safe can be mounted to a shelf, wall, or the floor.