The Blue Mule Easy Brush Foam-All is a foam cleaning system that continually creates foam through the soft bristle brush. This venturi injection system draws chemical concentrate from any sized container, mixes it with water and projects the accurately diluted solution through the 50' hose and 44" handle as a wet, clinging foam. Mount the Easy Brush Foam-All anywhere 50-125 PSI water is available. Foam continually flushes debris from the bristles. Great for jobs that require scrubbing with a soft touch. The soft bristled brush is suitable for use on paintwork and other delicate surfaces.