The vintage iSi 10 Food CO2 cartridges in gray are designed for use in whip cream machines, allowing you to easily create delicious whipped cream. Made of durable aluminum and originating from Austria, these cartridges come with replacements included for convenience. Perfect for collectors or anyone looking to add a fun and unique touch to their kitchen tools and gadgets collection, these cartridges offer a touch of nostalgia while providing a practical solution for whip cream enthusiasts. These are new in the box.