Preval Tap Valve, Allen Key pressure regulated Water Saver of high quality silver plated metal, no plastic. Fits most sizes of the metal ring around your faucet aerator. Anti calcium, anti bacteria. A great long lasting product to help save the environment and your economy and keep your faucets clean. www.preval.de 6 year guaranty
Sorry for the bad quality video. I am not affiliated with Preval, I just love their inventions. Preval is a German trademark product. Over 30 years of experience in water saving products
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