The Intertap Growler filling spout easily attaches to any intertap faucet. Just unscrew the standard spout and replace it with this growler spout. Then you have a 1/2" barb on the end of our faucet to attach your tubing. Made of stainless steel. It is always best to have a cool growler and cold beer to minimize foaming when you fill you growler. The tubing should go to the bottom of the growler so you are filling from bottom up and not oxygenating the beer.