Equalizer Heavy-Duty 3-Drawer Toolbox's external shell is made of heavy-duty high-impact polypropylene resin. It has a large top storage area, and three durable steel drawers with full extension slides that lock when lid the lid is closed. One great feature that most toolboxes do not have is the "front foot" design that stabilizes the box when the drawers are opened. It has a large, comfortable center handle and a very handy molded-in depressions in the cover to hold small parts.