Available at selected stores. Check your local store for details
These canisters should fit onto most threaded modern gas cookers. They will last for ages and have a 75% Butane 25% Propane mix which makes them operate better in colder weather or higher altitudes. Each cylinder will provide approximately 1 - 2 hours burn time and feature a bayonet-style self-sealing safety valve so that you can remove the cylinder from the appliance when not in use.