【Thread Repair】The spark plug thread repair kit is very easy to use. Use it to cut threads, repairing stripped or damaged spark plug threads and repairing spark plug configurations in aluminum heads. Thread repair only requires this set of tools, no other complicated tools are required. Anyone can use it without any difficult operation. 【Easy to Use】The M14*1.25 thread repair kit is suitable for spark plug repair. Just make sure the spark plug heads are made of aluminum and this kit will do the job. For ease of use, you can also add a thread locking agent (not included in the set). Additionally, the socket includes a metal retainer to hold the plug inside during installation and removal. Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.