CNZ Commercial Air Pump 6 Outlets 40 L per Minute, 35W Perfect to run several water farms or multiple air stones at once Ideal for fish pond and hydroponic farm Electrical magnetic air compressor in a high quality aluminum alloy case Tear resistant material for cylinder and piston 35 watts, 40l/min, 0.03 mpa dimension: 6.5"x3.5"x4"