The Surface Cleaner is great for use with large flat surfaces. It quickly cleans concrete & asphalt, and removes grime and deposits from tennis courts, ramps, and decks. The 21 inch cleaner can also clean factory floors, semi-trailer floors and drive-thru's with ease. Cleans better and faster than spray wand alone, with no striping. The surface cleaner uses hot or cold water and can handle water up to 212 degrees F to disinfect bathrooms and kitchens. Two spinning nozzles 'floats' cleaner above the ground and the circular design allows a zero wall clearance. Stainless steel housing and handle with a comfort grip trigger handle. 3/8 inch male quick connector plugs into your pressure washer's hose and includes two #2.0, 1/8" nozzles (for machines up to #4.0 nozzles), 25° nozzles rated up to 8 GPM & 4,000 PSI.