Livart Volt Butane Gas Cartridge (12 Pack) CRV- Explosion-Proof, Countersink Release Vent, UL Listed. Up to 2 hours of use per canister. Fits all Stoves designed for Butane Gas. 12 Pack - Contains 12 x 8 oz. (227 g) Individual Butane Gas Canisters. Store in a dry area away from heat. Shipped via UPS Ground only. Made in Korea. Model: Gas-2 CRV Butane gas system : Countersink Vent & Triple seaming. UL approved, CRV canister will not explode, even if external heat causes excessive pressure increase in the can. UL Listed, Fits All Stoves Designed For Butane Gas. 12 Pack - Contains 12 individual canisters Butane Gas Canisters Fits all stoves designed for butane gas Alternative to propane Up to 2 hours of use per canister. Store in a dry area away from heat, Butane canister for camping stoves.