This 3" Threaded insert ring is compatible with any 3" threaded Arctic Spa Turbo or Rising Dragon Tri-Face Jet. These lock rings turn a snap in jet into a thread in jet, in order to do this you must remove 2 screws from the old ring then install the new ring using the same 2 screws. If you loose a screw FYI they use M3*12 self-tapping screw. The screws are not supplied with this product. .
