ALWAYS KEEP A SPARE READY: This SodaStream Pink Quick Connect CO2 cylinder, makes up to 60 litres of sparkling water. Keep it on hand as a backup, so the moment the cylinder in your machine runs low you click in the spare and carry on making fresh fizzy water. COMPATIBILITY: The Pink Quick Connect gas cylinder is compatible with SodaStream Terra, Duo, Art, Gaia, E-Terra, ULTIMATE and ENSO. The pink cap means Quick Connect only. If your machine uses the Classic screw-in system, you need the blue-capped cylinder instead. Check your machine before ordering. SWAP YOUR EMPTIES, FIZZ FOR LESS: Every cartridge is exchangeable. When one runs empty, exchange it at a participating UK retailer or online for a refill, and pay only for the gas. The Soda Stream gas refill exchange keeps your costs down over time and your empty cylinder in circulation instead of landfill. GENUINE SODASTREAM QUALITY: Every SodaStream CO2 cartridge goes through a triple quality control check and is filled with 100% food-grade CO2, then sealed for freshness, safety and the best-tasting sparkling water in every glass. This refillable gas cylinder installs with Quick Connect, no twisting, just a single push, part of a range of genuine SodaStream accessories built to keep your machine at its best. SUBSCRIBE & SAVE ON GAS REFILLS: Never run out again. Get your SodaStream CO2 gas cylinders on a regular delivery, so a fresh refill arrives right when you need it. Pick the schedule that suits your household, skip or cancel any time, and keep the fizz flowing.