Drinkmate CO2 cylinders are replacement CO2 cartridges for threaded soda makers, made for anyone restocking CO2 at home. Each CO2 cylinder holds 14.5 oz of food grade CO2, so one cylinder sparkles up to 60 liters of drinks, roughly 169 cans of fizz before it runs empty. The aluminum body is manufactured to US DOT standards. The valve is the industry standard screw-in thread rather than a brand specific connector, so these threaded CO2 cartridges fit Drinkmate OmniFizz, LUX, and Spritzer machines, plus SodaStream blue label screw-in models, Ninja Thirsti, Aarke, Philips, Breville, Mysoda, and any other screw-in soda maker sold in the Americas. They do not fit SodaStream quick connect pink label machines, including Fountain, MIX, Enso, Gaia, Art, AquaFizz, Duo, E-Duo, Terra, and E-Terra, so check your valve before you order. These fit if your machine twists a CO2 cartridge in. Setup is simple. Screw a fresh cylinder in and start sparkling. Every order ships with your CO2 cylinders and a prepaid return label inside the box. No machine, no bottle, no adapter. Empty cylinders can be returned easily. Keep the shipping box, apply the included label, and ship your empties back through the Drinkmate CO2 exchange program. Drinkmate covers the return shipping and accepts empty cylinders from other brands as well. Choose from a 1 pack for a quick top up, or choose a 2 pack, 3 pack, or 4 pack to restock less often.