CARBONATER CAP C02 VALVE COUPLING CARBONATE SODA BEER TONIC CHAMPAGNE CARBONATION CARBONATOR Carbonates beer, wine, homemade soda, health drinks and even water! Carbacap screws to the top of any standard USA 1 or 2 liter PET plastic soda bottle. You can actually watch the CO2 being absorbed by the liquid. Requires CO2 tank, regulator, hose, and ball lock connector (Not Included) Lifetime Warranty