8 gram food-grade CO2 cartridges, used in 64-ounce (NOT 128-ounce) uKeg and uKeg GO growlers, and both sizes of uKeg Twist. Sold in boxes of 10.
PLEASE NOTE: This product is not intended for use with the uKeg Nitro Cold Brew Coffee Maker. Also, we cannot ship CO2 to residents of Alaska, Hawaii or Puerto Rico. Orders to these areas will not include CO2 cartridges.