2 packs of 6! 14mm x 1.25. 7/16" reach (11mm) These are NOS heli coil inserts for repairing stripped plug threads. Made in USA. These are inserts only, you'll need a heli coil tap and install tool. R07
12x Helicoil 14mm Spark Plug Thread Repair Inserts #R512 14- 1.25mm 3/8" Reach
12x Helicoil 10mm Spark Plug Thread Repair Inserts #R474-4 M10x1.0mm 1/2" Reach
Helicoil 14mm Spark Plug Repair Kit Part No. 5523-14
Useful M14x1.25mm Fit for 14mm Spark Plug Helicoil Thread Reamer Tap Repair Kit
