The 300 position key lock box from BARSKA features a hook-style cabinet that makes key organization easy and convenient. Inside the cabinet are thirty rows of color-coded and numbered hooks each of which is easy to access and keep track of thanks to the included key index. The two-sided indexing chart has ample room to document the keys hook position corresponding lock and a drop-in plastic sleeve tethered to the hinge inside the safe provides a hands-free reference. The safe has our pre-drilled mounting holes and included hardware for installation. the safe walls and door are constructed of 0. 8 mm solid steel and finished with a matte black coating.