Compact self-contained unit has a self-priming diaphragm pump with an easy-pour spout and cap. Draws oil through dipstick using 12V power; works best when oil is at operating temperature. Unit stands upright or lies flat and stores easily. Includes dipstick suction tube, battery clamp leads, on/off switch and handle. Flow (GPM): 0.5, Tank Size (gal.): 3.5