Master Spa Jets, Master Spa Jet Inserts, Master Spa Jet Internals Master Spas Uses Waterway Jets and Pentair Jets - There are Pictures of the back of each jet when you Click on the picture to ensure correct jet choice. There are also numbers on the back of your jet insert (example a 212-XXX number means it is a Waterway Jet, a non 212# means it is a Pentair Jet Jets Are Posted by Outside Face Diameter Available in Smooth Face or Scalloped Face. Most Jet Inserts are available in White, Grey or Black
