The surface cleaner is used for cleaning garage floors, driveways, patios, decks, sidewalks and more. Its 18 in. Diameter allows you to cut cleaning time in half on those big jobs. For use with cold water pressure washers rated up to 3400 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.