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