The BE Pressure 20" 4000 PSI Whirl-A-Way Stainless Steel Surface Cleaner (85.403.009) is the ideal pressure washer attachment for cleaning large flat surfaces. The three rapidly spinning jets create a large, streak-free cleaned path greatly reducing the time and effort needed for projects such as parking lots, driveways and sidewalks. The stainless steel housing handles the toughest jobs and conditions, protecting the rotary arms and resists corrosion.   High temperature seals also allows this unit to be used with a hot water pressure washer.