TIG Collet Body Alumina Nozzle Back Cup Kit Fit QQ300 CK DB SR WP 17 18 26 TIG Welding Torch Accessories Consumables 16pcs Fit QQ300 DB PTA SR WP CK 17 18 26 TIG Welding Torch 4pcs TIG Alumina Nozzle Ceramic Cup 4pcs TIG Collets & 4pcs TIG Collet Bodies 3pcs TIG back cap and 1pcs Gasket Cup Inset back insulator