The DEWALT Surface Scrubber is used for cleaning garage floors, driveways, patios, decks, sidewalks and more. Its 18 in. Dia allows you to cut cleaning time in half on those big jobs. For use with cold water pressure washers rated up to 3700 psi, this unit features high-pressure jets that are great for working near surfaces that you do not want to get wet. This surface cleaner is made out of high quality steel and uses high-pressure rotating jets for a thorough clean that are fast and streak free. The spinning jets help to remove dirt and grime from surfaces with ease.. Features 2 high-pressure, rotating jets for quick cleaning. Includes durable steel shroud and stainless steel nozzles. Features a pressure rating of 3700 psi. Included: No additional items or accessories included. Maximum Pressure (PSI): 3700 psi. Number of Nozzles: 2. Rotation speed (rpm): 2300. Product Width (in.): 18 in. Width of Clearing Path (in.): 18