JT 90gram CO2 Tank - Prefilled - 2pkThe JT 90 gram prefilled CO2 will work with most paintball markers. This 2pk of single use CO2 can get up to 300 shots depending on usage. Must be used with the JT 90 gram CO2 tank adaptor.Features of JT 90gram CO2 Tank - Prefilled - 2pk 90gram Prefilled CO2 Tank | Single Use Tank. Not refillable. | Standard use ..