The GEARWRENCH heavy-duty 4 drawer tool cart is easy to assemble and the storage capacity of the till and four drawers is over 10,700 cubic inches. Each drawer's ball bearing slides are rated to a 100lb load, and the overall cart load capacity is over 600 pounds. The drawer pulls feature a trigger latch retention system that keeps them securely closed when mobile. The four legs feature full-length molded bumpers which protect cart and other surfaces . The hidden caster bolts provide a large, smooth, clear storage surface in the bottom tray. The casters are 5" x 2" polyurethane with dual-locking top pedal brake - 2 swivel casters and 2 fixed - so this cart goes where you push it and stays where you park it. This cart also includes an external power tool rack and a storage area in the till where you can store long screwdrivers or pry bars and still lock the lid. All storage areas come with a black EVA foam liner to protect the interior surfaces and prevent tools from sliding.