This cartridge contains a butane/propane gas blend that provides a steady and consistent burn across a wide range of temperatures at lower altitudes, making it ideal for general use. All Coleman® cartridges feature a standard screw thread for easy attachment of Coleman® stoves and lanterns. For safety, the cartridge features Coleman’s double safety resealable valve, this means that the cartridge can be disconnected and reconnected to your device, without leakage.