Description General Description This complete spark plug thread repair tool kit is designed for professionals. It is a universal tool that facilitates the maintenance of gasoline engines, generators, diesel engines, and other machinery. Thanks to its efficiency, it allows for quick repair of damaged threads, extending their lifespan. Technical Specifications Item Type: Spark Plug Thread Repair Tool Threaded Tube Size: M10x1.25 (Thread Diameter x Pitch) Threaded Tube Length: Approx. 17.5 mm Threaded Tube Material: Stainless Steel Tap Size: M12x1.25 (Thread Diameter x Pitch) Tap Shank Diameter: Approx. 7 mm Total Tap Length: Approx. 88.7 mm Tap Blade Length: Approx. 29.7 mm Tap Material: High-Speed Steel Compatibility and Accessories Compatible with M10x1.25 spark plug threads Includes 1 M12x1.25 tap Includes 10 M10x1.25 threaded inserts Installation Follow the instruction manual included with the kit to install the parts correctly. Make sure the engine is off and cold before starting the repair work. Usage Use this tool kit to repair damaged spark plug threads. Insert the tap into the damaged hole and turn it to create a new thread. Then insert the threaded insert to complete the repair.