EcoPlus Commercial Air 1 - 18 Watts Single Outlet Widely used to provide oxygen in aquariums, fish farms and hydroponic systems. One year warranty.Will meet many requirements of pumps with air dividers from four to twenty-two outlets.Cylinders and pistons are made of excellent materials, making the pump strong, durable. Convenient to operate without oil or much noise.Comes with 6 outlet defuser, brass nozel, air pump, 6" of tubing to connect pump to manifold. Manifold is one 1/4" inlet to six 3/16" outlets. Pump is single outlet of 38 Liters/min2.9 psi, 120V, .25 Amps, Weighs 2.7 lbs, Measurements: 159 x 90 x 95mmTubing size 1/4 inch from pump to inlet of manifold. ID