15PC M12 x 1.25 Thread Repair Tool Stainless Helicoil Wire Insert Kit
Thread size: M12 x 1.25mm. Thread inserts material: Stainless steel. 10PC x Wire thread inserts. Thread tap and the drill material: HSS (High-speed Steel). To repair a spark plug thread no Pre-drilling is necessary if using the special Spark Plug Tap.
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