Features 1、100% brand new and high quality spark plug thread insert tap repair tools 2、With the size of M10 * 1.0 / M12 * 1.25, M14 * 1.5 / M18 * 1.5 3、A nice tool kit for repair damaged spark plug installing threads 4、Made of hardened carbon steel, these accessories are of strong strength and long durability 5、Easy to use and operate. Come and have a try Specification Features: 100% brand new and high quality spark plug thread insert tap repair tools. With the size of M10 * 1.0 / M12 * 1.25, M14 * 1.5 / M18 * 1.5. A nice tool kit for repair damaged spark plug installing threads. Made of hardened carbon steel, these accessories are of strong strength and long durability. Easy to use and operate. Come and have a try. Specifications: Material: Carbon Steel Color: As picture shown Small Tap Size: M10 * 1.0 / M12 * 1.25 Big Tap Size: M14 * 1.5 / M18 * 1.5 Weight: Approx. 230g Package Included: 2 * Spark Plug Re-thread Tap Package List