Kampa 227g bayonet butane gas - 220g Fuel Type:  227g Premium Mix Butane / IsoButane Cartridge Type: Bayonet Gas CartridgeNon- refillableApprox 1.5 hours cooking time Compatible with our Go Gas Dynasty Compact Cooker II, and many other family gas cookers of this style. (Suitable for all cooking appliances and heaters that use a P220 / Gas Cartridge.)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. Features a CRV (Countersink Release Vent) ensuring the cartridges won't explode in the event of abnormal gas buildup they are safe and secure for all occasions.