CQC Extra Cylinder Never let empty cylinders stop you from enjoying carbonated drinks. With an extra 425 g carbonated cylinder with Quick Connect at home, you can always feel confident in being able to create a refreshing carbonated drink at any time. The cylinder is adapted for Quick Connect, which is a patent-pending technology for quick and easy cylinder insertion means that you never again have to waste time screwing the cylinder. The extra cylinder is designed to fit perfectly in the SodaStream Terra™, Art™ and Duo™ and it can offer up to 60 liters of carbonated water, depending on the machine and amount of carbonation you use. Note: The cylinder is owned by SodaStream and used under license, therefore you need to pay a deposit for it.