This Carbonating Stone with 1/4″ MFL works great for both carbonating and oxygenating. In order to carbonate in your cornelius keg, simply connect 2′ of gas line into the gas in dip tube and attach the stone to the other end. Crank the Co2 very slowly (about .5 a psi at a time. For Oxygenating, either attach the stone to an air pump, or even better, connect it to an actual oxygenation bottle. It comes with 1/4 MFL fittings so you would need the 1/4 flare nut and barb in order to connect tubing. Stainless steel fitting.
