This extraction hose was designed after months of research and development. A water tube brings water or decontaminant solution into the Extractor Hood Assembly, thereby decontaminating hazardous particulates in the Extractor Hood Assembly. It also aids in smoother cutting and helps bring airborne particulates into the vacuum holding tank. The water flow to the spray jet installed in the Extractor Hood Assembly is controlled by a valve installed on the hose. ALL SPRAY - VAC EXTRACTION SYSTEMS REQUIRE THIS ATTACHMENT