The A.R.E. CargoGlide sliding bed units offer extensions ranging from 70 percent to 100 percent, allowing access tools and cargo. Built with a steel frame and side-thrust roller bearings, the units can slide smoothly on uneven ground, according to the company. The five models of CargoGlide are available have capacities ranging from 1,000 lbs to 2,000 lbs, four tie-down attachments and a full-length deck with a nylon laminated surface. The CG1000 has 4" side rails while the 1500HD, 2000HD, 1500XL and 2000XL models have 8" side rails. CargoGlide sliding units come with a five-year manufacturer warranty.