Commercial grade STAINLESS STEEL rotating cleaner for drive ways, parking lots, and other large surfaces. This unit has 4 rotating arms. it can be used with nozzles in all 4 arms for use with larger pressure washers or with only 2 nozzles with the other 2 arms plugged. The triple bearing swivel is Swiss made for exceptional service and longevity. Features Suttner ST-1500 spray gun. Some assembly required.