Convert your 3/8" drive air ratchet into a fluid transfer pump. Quickly fill or drain fluids: brake, transmission and power steering fluids, engine and gear oils, coolant. Easily engages with all 3/8" drive air ratchets. Retaining bracket holds pump during use for one-hand operation. Quick Couple fittings for easy hose changes and no drip storage of pump The ultimate accessory for your air ratchet. Kit contents: ratchet pump, 500mm / 19" x 8mm / 5/16" id suction hose, 800mm / 31" x 6mm / 1/4" id suction straw, 1m / 39" x 8mm / 5/16" id discharge hose and a blow molded case.