Simpson Cleaning 80166 Universal 15-Inch Steel Surface Scrubber for Cold Water Pressure Washers, 3400 PSI Universal to fit standard 1/4-inch QC spray wand connections High quality assembly includes powder coated steel shroud and stainless steel nozzles Two high-pressure, rotating jets for quick, streak-free cleaning 15-inch diameter helps make cleaning large surfaces such as garage floors, driveways, patios, and decks quick and easy Fits most gas-powered pressure washers rated up to 3400 PSI; for cold water use only