OEMTOOLS 25643  Fix-A-Thread Spark Plug Thread Repair Kit, Metric Designed to Repair Stripped Threads On Non-Tapered Seat Spark Plugs Rethreading in All Materials Such As Alloys, Steel, Plastics and Magnesium Specified for Military, Aviation and Other High Demand Usage High Quality 18-8 Stainless Steel Wire with a Diamond-Shaped Cross Section Kit Includes 3 Thread Inserts and Thread Tap