TIG Gas Lens Kit TIG Back Cap Collet Body Fit TIG Welding Torch DB SR WP 17 18 26 43 pcs Fit QQ300 DB PTA SR WP CK 17 18 26 TIG Welding Torch 15pcs TIG Alumina Nozzle Gas Lens Ceramic Cup 12pcs TIG Collets 5pcs TIG Collets Lens and 5pcs L.G. TIG Gas Lens Collets Body 3pcs TIG back cap and 3pcs Gas Lens Gasket Cup Inset back insulator