Buy CO2 Supplies to refill Drinkmate, SodaStream, Aarke, and iSoda machines. Drinkmate cylinders come filled with food grade CO2. They are made of durable aluminum to US DOT standards. Two-pack of cylinders makes up to 120 one-liter bottles of sparkling beverages! Compatible with all Drinkmate and SodaStream appliances in the Americas Actual product weight (not including gift box) pounds: 5.7lbs # Pieces In Set: 1 Pair Number of Settings: 1 Intended Use: Blending Measurements: 16 Length/Inches, 4 Height/Inches, 6 Width/Inches Capacity: 14 oz. Base Material: 100% Aluminum Care: Wipe Clean Decor Styles: Modern Country of Origin: Imported