SodaStream External CO2 Tank Adapter Kit — W21.8-14Stop wasting money on expensive SodaStream CO2 cylinder refills! This adapter kit connects your SodaStream Terra, DUO, or Art machine directly to a standard refillable CO2 tank with W21.8-14 thread (European standard).What’s IncludedQuick connect adapter for SodaStream Terra / DUO / Art1.5m braided stainless steel high-pressure hoseW21.8-14 brass connector (EU standard for refillable CO2 cylinders)Quick disconnect fitting for easy installationKey FeaturesSave Money: Refill your external CO2 tank for a fraction of the cost of SodaStream cylindersCompatible: Works with SodaStream Terra, DUO, and Art machinesEU Standard Thread: W21.8-14 fits all standard European refillable CO2 cylindersHigh Quality: Braided stainless steel hose rated for high pressure, brass fittingsEasy Installation: Quick connect system — no tools requiredPerfect CombinationPair this adapter with any standard refillable CO2 cylinder with W21.8-14 thread for the ultimate SodaStream upgrade. One large cylinder provides hundreds of litres of sparkling water!