Operates on compressed air. Integrated 2.3 gallon capacity reservoir. Large base with foot stabilizer. Durable, chemical resistant polyethylene construction. Independent air shut off valve Quiet, muffled exhaust. Automatic overflow prevention. Quick drain pour spout. Operates on compressed air to create a powerful venturi vacuum for draining fluids from tanks and reservoirs. Compressed air hose attaches at base for stability. Includes accessories for draining engine oil or transmission fluid directly through the dipstick tools. Also includes brake/clutch bleeding kit (7205) for vacuum bleeding hydraulic brake and clutch systems..