For Aluminium Cylinder Heads with stripped Spark Plug threads. Inserts in Kit : 5 x 12.7mm, 5 x 17.5 mm. Installed Length. Very High Quality Kit Made in Germany.
Spark Plug Thread Repair Kit – 14mm Reamer Thread Repair Tool &4 Inserts
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1Set Stainless Steel Spark Plug Thread Repair Tool with M10x1.0 Thread Inserts