Gasone Butane Fuel Canister (4pack) Go to amazon.com Related posts Expert choice for butane gas cartridge Best iwatani butane stove FeatureEach package contains 4 - 8oz. cans of fuelEach can of fuel lasts for approx. 2 to 8 hours of burn time Description4 pack of 8 ounce butane fuel canisters. Re-fills for camp stoves, heater, camp lights.