TIG Weld Tungsten Insert, 90°. Electrochemical cleaning of TIG, SPOT and pulsed MIG welds. Removes heat tint and other surface contaminants from welding processes on stainless steel. Features are Highly conductive material. Resistant and durable. Excellent for general weld cleaning. Suitable for use with cleaning pads and clamp ring or cleaning hood. Increased performance when combined with SURFOX High Conductivity pads. Neutralize with Surfox-N after use to prolong tool life. For use with Surfox 104 and 204 only.