M12x1.25 spark plug repair kit p/n 4212-125 tooling. On installation the bottom internal threads of the insert are cold rolled to expand the mating external threads into the base material locking the insert in place.
Tap & Die Set 4 Wheel Studs & Nuts Thread Re-Cutting M12 x1.25 M12 x 1.5 M14 Kit
Combo Thread Chaser Tool M8 x 1.25, M10 x 1.25, M11 x 1.25, M12 x 1.25 Set of 4
EVIL ENERGY 6AN Male Flare to M12 x 1.5mm Metric M12*1.5, Black
2 PCS , M14 x 1.5/M18 x 1.5 M10 x 1.0/M12 x 1.25 Thread Spark Plug Chaser Tap...
Kent Moore J-42385-855 Time Sert M12 X 1.75 X 24mm Carbon Steel Insert 10 Pack
