The Holman Pro IV truck bed rack offers many of the same great features as the Pro II rack in a lightweight aluminum construction. It is constructed of 2 inch diameter, T-6 aluminum tubing that resists rusting and corrosion. Stainless steel fasteners are used to keep the hardware corrosion resistant too. The round tube design of the Pro IV truck rack gives a sleeker look, and less wind noise and drag over traditional square tube designs. The aluminum truck ladder racks are finished with a black powder coat finish that provides abrasion and corrosion resistance. It is then covered with a clear coat to add extra scratch resistance as well as a gloss finish. Swaged joints and fully gusseted cross bars ensure rigidity and enable the Pro IV utility rack to offer a 1,000 pound cargo capacity. High strength side rails keep cargo from shifting and loop around in the back to provide handy grab handles for entering the truck bed. | Holman Extra Crossbar for Pro IV 31691