It is a revolutionary simple new way to carbonate a 5 gal keg of beer in less than an hour! This patent pending product uses a simple circulating pump and a unique stainless steel diffusion stone to carbonate your beer precisely and quickly without a chance of accidentally overcarbonating! Interested in in-line oxygenation of your wort before pitching your yeast? Simply add an oxygen regulator and you're ready to go! The QuickCarb is truly a versatile tool!