1、Excellent 304 Stainless Steel Material: This thread repair tool kit is made of excellent 304 stainless steel material, which is sturdy and wear resistant, not easy to be damaged, and has a long service life. 2、Multiple Tools: This thread repair installation kit contains a variety of tools, including wire thread inserts, twist drill bits, taps, and lug breaking tools. 3、Multifunctional: This thread repair kit is used for low strength materials such as aluminum and aluminum to avoid thread damage and get good connection performance, enhance connection strength and improve connection condition. 4、Compact And Portable: This metric threaded inserts installation tool is small in size and light in weight, which makes it very convenient to carry around and use. 5、Wide Application: This metric thread repair kit has a wide range of applications and is suitable for repairing threads on machinery, equipment and automotive parts. Item Type: Thread Repair Kit Model: YB03020 Material: 304 Stainless Steel Thread Repair Sleeve: M4 x 0.7 x 2D M4 x 0.7 x 2D is to say to install the screw is M4 x 0.7 thread. M4 is the diameter of 0.7 is threaded, 2D is the length of the diameter on behalf of the length of 2 times. 1 x Thread Repair Tool 1 x Drill Bit 1 x Tap 1 x High Punching Tool 50 x Thread Repair Inserts 1 x Storage Box