Replaces the 3-way switch assembly in hoses made by Plastiflex. Plastiflex hoses have a "P" within a circle molded into the wall end cuff. Almost all hoses on the market are made by Plastiflex, including Wessel EBK340 & EBK360, Stealth, Ace, Beam, Nutone, Vacuflo, AirVac, M&S, to name a few.