Check the listing for details. M10X1 Inserts Spark Plug Repair Tools Kit For Gasoline Diesel Engines Generators. Color: Silver, Condition: New. Listed at 15.99 USD. FITS: suitable for gasoline engines, generators, diesel engines, etc. Features: Made of quality steel materials, durable and reliable in use. Not easy to rust, corrode or peel. Designed to make the car work well and improve work performance. The design is beautiful and elegant. INSTALLATION GUIDE: 1. Match the intended thread repair kit. 2. Check the size on the tap and inserts. 3. Drill out the damaged bore or thread for the thread you are intended to restore(Drill tool NOT included) 4. Clean the hole with cleaning cloth, make sure no something is left in the hole. 5. Slightly run the tap into the hole, from the bottom tapered cutting edge, to the correct depth by hand or on a machine tool of 3/8"" square drive. 6. Clean the thread, ensuring no something is left in the hole. 7. Check th.