EcoPlus Pro Linear Air Pumps are commonly used to provide oxygen in aquariums, fish farms, hydroponic systems and more. These air pumps are designed to minimize noise, heat and vibration in environments where aeration is needed. This product requires minimal maintenance and is oil-less; no need for lubrication. Each Pump comes with a metal barbed outflow fitting, metal air manifold and tubing with two hose clamps. Can be used with EcoPlus Trumpet Style Air Manifold. Includes two metal fittings, tubing, two metal clamps and manifold.