【thread repair】The spark plug thread repair kit is very easy to use. Use it to cut threads and repair broken or damaged spark plug threads, as well as repair spark plug assemblies in aluminum heads. Only this tool kit is required for thread repair, no other complicated tools are required. Anyone can use it without complicated operations. 【Easy to use】The M14*1.25 thread repair kit is suitable for repairing spark plugs. Just make sure that the spark plug heads are made of aluminum and this kit will do the job. To simplify the application, you can additionally add a thread locking agent (not included in the kit). In addition, the socket has a metal bracket to hold the plug inside during installation and removal. 【Contents of the kit】The kit includes a 14mm reamer with 12 cutting edges (can be used with a 3/8" ratchet or wrench) and 4 blades in sizes 3/8, 7/16, 1/2 and 3/4. The tools are complete and easy to use. 【premium material】Our spark plug thread repair kits are made of high