Coleman C250 Gas Cartridge , A Threaded Self Sealing replacement gas Cartridge for Coleman Gas appliances, weight 220g  EN417 Gas Mix 70% Butane 30% Propane. This Coleman C250 Gas Cartridge is only available for collection from IBEX Camping. The Butane / Propane mix of the Coleman C250 Gas Cartridge gives the best performance in mild to moderate conditions.