CO2 (carbon dioxide) cylinder 425g (60 l) made of aluminum incl. filling with certified German quality food carbonic acid (E290). Suitable for many drinking water bubblers and systems such as: Please select your sparkling water maker. 1. Standard/Universal Aqvia* (all models: Balance*, Elegance* and others) BelaAqua Frizzante bubble maker GasUp happy frizz KitchenAid Levivo Limo Bar* (all models: ECO*, Edge*, Zoom* and others) My Soda* (all models: Ruby*, Toby*, Woody*) Philips* (Model: ADD4902*) Prick'l Star Rosenstein & Sons* (Model: WS-110.Soda) soda club SodaStar Sodatronic SodaWaterMaker WasserMaxx* (models: Fun*, Deluxe*, Trend*) and much more a. 2. SodaStream*/ SodaTrend*: Soda Stream* (models: Crystal*, Crystal 2.0*, Cool*, Design*, Dynamo*, Easy*, Genesis*, Jet*, MAXI*, Penguin*, Play*, Power*, Pure*, Revolution*, Spirit *, STREAM* etc.) SodaTrend* (all models: Classic*, Deluxe*, ST2-G100* and others)