Excellent Tensile and Compression Resistance The liquid transfer pump is made of high quality PVC material with good toughness and durability. Easy To Use Insert the oil inlet pipe to the bottom of the fuel tank and insert the oil drain hose into the prepared fuel tank, press the rubber ball 3-5 times and the liquid will flow out automatically. Fast oil speed, easy to operate. Big Flow Heavy duty PVC oil pipe resistant to oil, high temperatures and corrosion, the large diameter pipe can pump liquid faster. < / p> Wide Application This hand pump is for diesel, gasoline, fuel oil, water and other common liquids, it can also be a water changer for aquariums in your home. < / p> Simple Vacuum Principle Due to gravity, liquid flows from a high tank to a low tank.