Compact, lightweight gear pump has no impellers to burn up or replace. Pump body and gears are made of PTFE for long life and the pump is self priming up to 3.2 ft. Includes oil dipstick extraction tubes (6 & 8mm) and 70" power cable w/battery clamps. Hose outlet: 1/2", inlet: 5/16". GPM 2.11 Volts 12