1Suitable for WP17WP18WP26 argon arc welding torch. 2Specially designed for precise welding and small jobs where you need to see the position very clearly. 3Helps to homogenize the gas flow of the welding, thereby helping to improve the quality of the welding. 4Compared with ordinary ceramic shield cups, it can save at least 30% of gas. 5They are widely compatible with the original universal spare parts of TIG torches. 6It's easy to assemble, you just need to push the transparent protective cup to make it firm and seamless. Item Type: TIG Welding KitOptional Model: 1.6mm, 2.4mm, 3.2mmMaterial: Glass, copper, rubberApplicable Object: for WP17, WP18, WP26 argon arc welding torch 1 x TIG Collet1 x InsulatedGlassCup3 x High Temperature Resistant O-Ring1 x 3.2mm Brass Chuck1 xWhitePlastic Ring