Size: The spark plug size is M10*1.0/M12*1.25, M14*1.5/M18*1.5. High quality: The spark plug tool is made of carburized carbon steel. It is very strong, not easy to damage, wear-resistant and has a long service life. Performance: The spark plug is an excellent tool for repairing damaged spark plug mounting threads. A perfect courtesy, reading and map light for your RV, caravan, truck, utility vehicle, boat and caravan applications. Service commitment: If you have any questions or are not satisfied with the product, you can contact our customer service at any time. When we receive it, we will process it as soon as possible. Specifications: Material: Carbon Steel Color: As the picture shows Small Tap Size: M10*1.0/M12*1.25 Large Tap Size: M14*1.5/M18*1.5 Weight: Approx. 230g Package Included: 2 * Spark Plug Rethread