EcoPlusŪ Eco Fixed Flow Rate Submersible Pumps These submersible water pumps are great for everything from fountains to hydroponic systems. The pumps have an inside threaded fittings and the flow is non-adjustable. Powerful oil-free, rare earth rotor magnet. Ceramic shaft and bearing insures reliability. Trouble free one moving part. Strainer protects impeller from damage. Comes with a 120 volt cord. Include inlet and outlet fittings.