Cleans all flat surfaces including patio’s, paths & walls six times faster than a conventional nozzle, taking the effort out of cleaning. This unique accessory, designed to fit most of the current Nilfisk Alto consumer pressure washer range, allows large horizontal or flat surfaces to be cleaned quickly & efficiently with little or no overspray of water. The patio washer works by using high pressure water from the pressure washer to drive a rotating arm which cleans a wide area in one pass. Download Health & Safety information