DEWALT Tough System rolling tool box sets include a hand truck and different-sized, plastic tool boxes for storing, organizing, and transporting tools and supplies. The tool boxes are lightweight to ease transport, won't dent or rust, and have no sharp corners that could gouge or scratch surfaces. They interlock and stack on the wide nose plate of the hand truck. Folding brackets along each edge of the hand truck's frame lock onto the sides of components to stabilize the load. The hand truck has two large wheels so it can tilt back and roll along flat or rugged surfaces and up or down stairways.