A composite is a solid material composed of two or more substances having different physical characteristics and in which each substance retains its identity while contributing desirable properties to the whole.
Shown here, this popular pattern typically consists of raised treads in the surface of aluminum or steel. Recently, this pattern has extended to thin stainless steel sheet and plastic composite materials in other products. The pattern is popular for truck toolboxes, utility chests and modular garage flooring, along with many other heavy-duty needs. It's the all-around look of "tough."
The largest full-size pickups available today feature dual rear tires on each side of the axle for extra rear-wheel towing power. The "dually" nickname is used exclusively for truck featuring the dual rear tire configuration. Most of these trucks employ a fifth-wheel hitch in the bed for hauling massive trailers.