"With the carbonator you can transport draft beer, homebrew or commercial, just about anywhere. Simply transfer the chilled draft beer into a PET bottle, soda or water which has been cleaned and sanitized, screw on the Carbonator, squeeze out the extra air, and inject carbon dioxide into the bottle to keep the beer fresh and carbonated. Carbonate soda, juice, power drinks, mixed drinks or just plain water. The carbonator can inject or maintain Co2 in any beverage. Requires ball lock fitting. "