M12 x 1.25 Spark Plug Thread Repair Kit 4 Inserts HSS Steel Tap 16mm Hex

The kit is based around an M12 x 1.25 thread format, making it suitable where that thread size is required. Four insert lengths are included at 9.5mm, 11.1mm, 12.7mm and 19.1mm, giving useful choice depending on thread depth and repair condition.