Product Details
The M12-1.25 carbon steel insert for metal, made in the USA, is designed for thread repair applications, specifically for spark plugs. This kit includes the 329-1212 thread repair insert, measuring M12-1.25 x 5/8-18 x .703 inches, made from durable carbon steel. It offers reliable performance in restoring threaded holes in metallic components, ensuring longevity and consistency in various mechanical applications. The insert is compliant with industry standards and specifications, making it suitable for professional use.








