With each cartridge containing 440 grams of gas, this economical pack of six contain a butane/propane gas blend that provides a steady and consistent burn across a wide range of temperatures at lower altitudes, making them ideal for more general use. These threaded cartridges feature a self-sealing safety valve allowing them to be removed from the device even if they haven't been completely emptied, making them ideal for use in multiple devices. C500 gas cartridges are compatible with all Coleman® resealable appliances. Steel. Includes: 6 x C500 Gas Cartridges. 2.6 litre capacity. Manufacturer's 2 year guarantee. EAN: 3138528049243.