I bought this for my son (for too much) . He does not need it now , he bought one already so he could be on the job site with his tools. This is a locking tool box (we lost the keys) for a truck but can also be put on the back of a vehicle on a hitch. There is only one compartment shelf inside as per picture. It is bolted to a basket (not the one shown in the last picture but very similar to that). I understand you can get new locks and keys from Princess Auto. The dimensions are in the pictures with the tape measure. Should fit any full size (width) pick up truck. This is currently sitting on a hand truck cuz it is very heavy to move.