Heavy-Duty Surface Cleaners for high pressure cleaning of driveways, parking lots, sidewalks, warehouse floors, etc. Designed to handle up to 4000 PSI and 8 GPM supplied from your existing pressure washer. Heavy-duty, stainless dome supports high quality swivel and arm assembly. Available in 20" to 24" sizes in either brush skirt or caster wheel design. Rated to 180° F. Units are complete with trigger wand, handle, nozzles and feeder hose. Units come with dual arms for (2) nozzles except the 24" model which features a Tri-arm for (3) nozzles.