Abstract: A tool box is formed of two identical shallow halves hinged together to have an open position for use and a closed position for carrying. A set of supports permit the box to be temporarily attached to a wall, such as the rear cab wall of a pickup truck or the like, in the open position providing access to tools held in a plurality of tool holders attached to planar walls of the box halves. The supports include resilient portions for quick release of the box halves. Handles on the tool box permit carrying in the closed position.