Perfect for larger hydroponic systems, this fixed flow submersible pump is also a great choice for fountains. The pumps have an inside threaded fittings. 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. Includes inlet and outlet fittings, 1 year warranty, pumps 1638 GPH, max height of 12.5 feet, 245 watts.