Air Pumps Are Useful For Tank Water Airation And Filtration Also , Fully Submersible And Ideal For Any Aquarium Filtration .The case is made of high-quality ZL 102 aluminium alloy with Streamline design, heat-dissipation is more effective. Driven by electrical magnetic motor, adopt straight-line reciprocal Motion to produce air and more reasonable in structure. Adopt SF3 new type wearable material for the cylinder and piston, This is of low power consumption, large air output and high Air pressure. Non-oil lubricating design, the compressed air is purified.