16pcs M14 x 1.25mm Spark Plug Re-thread Repair Tap Tool Thread Reamer Insert Kit Product Description Description: Are you still troubled by the problem of how to repair the thread? This Spark Plug Re-thread Repair Tap Tool Set will be your good helper. They are not only industrial fasteners, but also suitable for automobile maintenance. 16pcs highly useful and top quality Plug Thread Repair Tools. A nice tool kit for repair damaged spark plug threads and lengthen spark plugs service time. Made of hardened steel, these accessories are of strong strength and long durability. Features: .