LiquaGen Chrome Faucet Diverter Valve/Adapter Ring + Tubing | Reverse Osmosis Water | Lead Free Top quality replacement faucet adapter with 4 feet of food graded tubing. Used to attach RO systems to most Kitchen Sink Faucets. They allow RO units to remain connected to the sink. Simply turn the diverter valve lever to operate the RO unit and push back to use the sink faucet. If you have a female faucet you would need to purchase a male adapter. 1/4" Outlet for tubing. Easy install. No plumber required. Please make sure you have a standard faucet.