Keg Smiths 16G Beverage Grade Co2 Cartridges - Threaded, Compatible, And Outdoor Ready For Inflators And Bike Tires - 100% Safe For Food And Beverage UseKeg Smiths food and beverage grade 16 gram co2 cartridges are perfect for threaded device applications The cO2 cartridges are 100% food and beverage safe cOMPATIBLE FRIENDLY Threaded cO2 cartridges..