The Rock N Roller R10 Max Truck with R Trac has a capacity of 500 pounds and easily handles DJ, photo or video equipment, drums, keyboards and lighting systems. The rugged steel frame telescopes from 34"" to 52"" long, with 32"" folding sides. Pneumatic wheels offer excellent shock absorption, protecting delicate equipment on rough surfaces. This convertible cart ingeniously changes shape and length for varying load sizes, and folds small for storage. Specifically designed to meet the requirements of car and air travel, Rock N Roller Multi-carts are the best-selling carts in the music industry. Newly added R Trac type wheels lighten the weight of the cart and provide a smooth ride. * 2-wheel hand truck formation has a long nose and stair climbers. * 32 inch foldable sides rotate and lock into place easily. * Perforated front axel reduces weight. * 5 x 1.25 inch front swivel casters with soft thermoplastic tread for a smooth quiet ride. Lightweight transforming 8-in-1 hand truck * Transforms into any of 8 configurations in 2 seconds. * Lightweight steel frame easily expands 34 to 52 inches in length. * Non-skid bed surface resists load slippage. * 10 x 3 inch wheels * New R Trac wheels are lightweight and smooth-riding * 1 Caster brake.