1Function: The thread repair kit is ideal for restoring stripped or damaged internal threads as well as for performing maintenance work to protect any threads from wear and tear. 2Easy to Use: The drill bits could quickly create room for the installation tools to smoothly fit the inserts that repair your old threading; the breaking tools clean things up for use. 3Durable Construction: The thread restorer kit is made of metal material, it has high wear resistance, high toughness, strong durability and long service life. 4Complete Accessory: The thread repair kit including thread inserts, drill bit, thread tap, insert installation tool, lug breaking tool, allow you have smooth repairing experience. 5Ergonomic Design: The red handle is ergonomic designed, which ensure nonslip, wearproof, comfortable to use and can greatly improve work efficiency.