Internal (Thread Chaser) Spark Plug Re-thread Tool Kit 7pc

1. Repair damaged, deep-seated spark plug threads on modern engines

2. Allows the tool passed through the plug thread into the combustion chamber

3. Expanded to the correct size starting on the inner, undamaged threads

4. Traditional thread restorers rely on luck for restored and undamaged threads to align

5. Contents:

- 12mm Internal Spark Plug Rethread Tool

- 14mm Internal Spark Plug Rethread Tool

- 18mm Spark Plug Rethread Tool

- 8mm Internal Spark Plug Rethread Tool

- 10mm Internal Spark Plug Rethread Tool