BETE Fog Nozzle”s ScrubMate nozzle is a rotating washing nozzle that offers solid cleaning capabilities at low pressures and low flowrates to provide greater economy. The self-cleaning, compact design fits through small openings. O.D.: SM50 – 1.93″ (49mm), SM75 – 2.38″ (72mm), SM30 – 1.38” (35mm). With a high-impact scrubbing action, the ScrubMate has a slow rotation speed that provides better cleaning.