G-Works Gas Saver Plus Upgrade Cartridge Exchanger Anodize Duralumin The Gas Saver Plus helps to shift the remaining screw type gas from used screw type gas container. If combine with butane adapter (8809451970021), Can shift Bottle Type gas to screw Gas Cartridge. Material : Anodized Super Duralumin / Brass Note:the stove,Gas and other Converter not included Include : Gas saver Plus, small Pouch