Has air control valve for raising or lowering of loads. Adjustable front bumper extensions with large rubber mounting pads. Rear wheels. Lift Capacity (tons): 1 1/4, Min. Lift Height (in.): 10, Max. Lift Height (in.): 33, Operation: Air, Working Pressure (PSI): 120 - 180, Air Inlet Size (in.): 6/25, Safety Valve: No, Base L x W (in.): 36 x 36