"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. Tank Size gal. 3.5, Flow GPM 0.5. Perfect for boats, RVs, autos or industrial use Easy-carry handle Self-priming, run dry pump design"