The DUO Sparkling Water Maker’s pink handle system is only compatible with the SodaStream Quick Connect Cylinder . The Quick Connect Cylinder is specially designed with an advanced mechanism for simple insertion of the cylinder, is patent pending and only available by SodaStream. Look out for the pink Quick Connect Cylinder!
Please note that, all SodaStream CO2 cylinders are quality tested when refilled. SodaStream cylinders should only be maintained and refilled by SodaStream. Unauthorized refilling of cylinders by third parties could be risky. SodaStream only warrants the safety of cylinders refilled by it, bearing a SodaStream tamper proof valve seal. SodaStream is not responsible for products of any other company or brand, which may damage the Sparkling Water Maker and void the warranty.