Butane/Propane Gas Mix Cartridge; Fitted With Standard Type En417 Threaded Self Sealing Safety Valve. The Threaded Cartridge Screws Directly Onto A Cadac Safari Chef; Fire Up; Fire Express; And Many Other Products Driven By Cartridges. Ideal For Home Use; Camping; Fishing; Picnicking Or Hiking. Weight: Approximately 700 G When Full