long/short back cap for WP-18 TIG welding torch accessory of ... torch consumable for welding spare parts long/short back cap for WP-18 TIG welding torch1.wp-18 water ... holder, gas diffuser swan neck, insulator ,steel liner, rear handle, cable...... 5, TIG welding gun and spare parts, such ... air cooled and water cooled etc. Including torch head, back cap, cup gasket, collet, collet body, gas lens body, ...