This Campingaz 1750 Gas Cartridge contains a mix of Butane/Propane gas and is suitable for use with Campingaz blowlamps and blowtorches. It has a high Ironmongery and Security self-sealing valve, meaning it can be easily and safely disconnected and reconnected even when not empty. Complies with EN417. Caution: This Product is Highly Flammable. Gas Weight: 170g.