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:Applicable to automobile, railway industry, agricultural machinery and other products.Suitable for all kinds of products that require high thread strength.It can be used to quickly and efficiently repair threads.Standard bit and tap are required for installation.Set design is convenie.