Premium Material: The thread repair insert set is made of premium stainless steel, corrosion and rust resistant, not easy to break, high strength and excellent performance in harsh environments, durable and can be used for a long time. Easy to Use: The stainless steel wire thread insert can eliminate the gap between the thread hole and the tooth plate, firmly lock the screw in the thread hole, ensure that the screw is not easy to loosen during vibration, improve the performance of the thread connection, and increase the service life of the thread. Easy to Store: All wire thread inserts are stored in a transparent and stable storage box with compartments. The wire thread inserts are stored separately, well organized, easy to carry and find. There is no confusion during transportation and it is easy to use. Wide range of applications: can be used to repair peeled thread holes, used for low strength threaded connections, various materials with wear resistance, suitable for household appliances, automobile, railway, shipbuilding, aerospace precision parts and many other fields. Package content: you will receive 10pcs M3 * 0.5 * 2D, 10pcs M4 * 0.7 * 2D, 10pcs M5 * 0.8 * 2D, 10pcs M6 * 1.0 * 2D, 10pcs M8 * 1.25 * 2D, 5pcs M10 * 1.5 * 2D, 5pcs M12 * 1.75 * 2D, for a total of 60pcs, meet the requirements of different occasions.