Pack of 20 non-threaded 16g food grade Co2 cartridges. Compatible with many CO2 cartridge beer kegs, CO2 tyre inflators and various other Co2 devices. Perfect for on-the-go beverage dispensing! These beer cartridges eliminate the need for a tank and regulator, making it simple to transport and serve your brew. When cleaning out your keg for home brew beer brewing, these 16g beer cartridges for use with Co2 injector are ideal because you won't have to drag your entire gas line set up outside or to the kitchen ready for the next brew.