This part is (1) Replacement Diffuser for a 3" to 3 5/16" Threaded Waterway Mini Storm Jet.
Note: This part is a Waterway Threaded Mini Storm Jet back diffuser
Thread-In Mini Storm Jet with twin roto nozzle made by Waterway. This jet has a 3" face diameter in gray and stainless steel and threads into the jet body provding a long lasting tight fit.