1This kit including 10pcs threaded inserts. Effective thread repair tool is simple to install 2Repairing the threaded hole in a cost?effective manner. If a thread error occurs or a damaged female threaded hole is repaired, threaded insert can be used as a repair method 3Adopt great 303 stainless steel material to ensure the durability and stability of the product 4Suitable for used in aviation, automobiles, steam turbines, electronic communications, computers, lamps, molds, mechanical equipment and radiators 5This is a coarse thread nut, the thread spacing is wider than the same specification fine thread restoration nut