This Campingaz Gas Cartridge contains a mix of Butane/Propane gas and is suitable for use with Campingaz blowlamps and blowtorches. It has a high-security self-sealing valve, which means it can be easily and safely disconnected and reconnected even when not empty.Suitable for all standard EN417 valve blowlamps.Caution: This Product is Highly Flammable.