This quick release gas coupler features allows for quick connection and removal of torch shielding gas hoses. Plus, it is compatible with W-180, W-200, W-225, W-250, W-280, W-310, W-350, W-375, W-400, W-410, CS310, CS410, W-375, WP-18, WP-18SC, WP-2-, WP-20P, WP-24W, WP-25, WP-280SC, Weldcraft brand. It can be used for TIG welding.