Go System Bayonet Gas Canisters - 227g   Mix of Butane/Propane Gas Approx 1.5 hours cooking time The Bayonet Gas Canisters from Go System is designed for use with the Go System family camping cooker and many other stoves.  The gas canister simply clicks into place in the Go Systems Dynasty Compact thanks to its bayonet fitting. This provides a safe and secure seal as soon as the canister is inserted. It provides approx 1.5 hours of cooking time before running out. Because of this relatively short run time we would advise always having a spare! A 220g bayonet gas cartridge filled to the European standard EN417, and fitted with a double skin safety valve for additional security.