The Eurohike gas cartridges use an isobutane and propane mix that allows for a powerful all-season flame while maximising fuel efficiency. They come with a temperature-sensing safety valve that prevents gas flow when overheated to prevent explosions. They also feature an RVR (Rim Vent Release' system which controls gas release in extreme situations to prevent pressurised explosions.Fits Campingaz Camp'Bistro 2 and other similar stovesIsobutane/propane gas cartridgesBayonet cartridgeWorks in cold temperatures down to -1oCTS Safety ValveRVR CartridgePack of 4Weight (per cartridge): 227g