If you're reading this, there is a 98% chance you already own a glass growler. I mean lets face it, this is a site for craft beer nerds! The Growl Cap gives you a great way to add CanKeg taps and regulators to any standard glass growler!
With a 1/4" barb on one side and a 1/4" MFL on the other you can easily add any of our regulators including the one you already own from your Pro Tap Kit.
If you don't have any parts at all you can get the full kit here.