Fixed Flow Rate Submersible or Inline pumps are great for a variety of application including hydroponics, aquariums, ponds and more. These magnetic driven pumps are constructed with a high quality rare earth rotor magnet which helps deliver an efficient, powerful and constant water flow. Pumps are oil-free and have a ceramic shaft impeller that allows for use in fresh or saltwater applications. Pumps include a variety of attachment fitting to choose from as well as a strainer and foam filter. For use indoors or outdoors. UL listed.