This 1/2 inch self-priming jiggler pump head is made with water grade red copper. It is suitable for siphoning fuel, insecticides, paints, water, thick oil etc. There is no suction or mechanised parts, nevetheless, the pumping is quick, convenient and safe. Being 1/2 inches, the pump can transfer 5 litres per minute of liquid per minute. For nearly any job requiring transfer of fluids, this convenient self-priming transfer pump is the ideal tool!