"The ErgoCart is a spring-loaded, self-leveling metal cart that automatically lowers as parts are added and raises as parts are removed to reduce the need for bending and twisting by workers. Keeps working area in the ergonomic green zone, reducing the risk of injury. U.S.A. Load Capacity lbs. 800, Lowered Height in. 9 1/2, Raised Height in. 35 3/8, Overall Dimensions L x W x H in. 32 x 29 1/2 x 55 3/4, Platform Size L x W in. 30 x 20, Caster Size H x W in. 6. Springs easily adjust for load capacities from 100-800 lbs. 30in.L x 20in.W working platform Built-in push/pull handle Four 6 in. dia. polyurethane casters provide easy maneuverability Low maintenance design requires no electricity, hydraulics or air power"