1Package Contents: The thread repair kit includes thread inserts, drill bit, thread tap, insert installation, lug breaking tool, practical to use. 2High Efficiency: Professional thread repair kit can be used to restore damaged threads, allow you have smooth repairing experience. 3Practical Repair Tool: Thread repair set is ideal for engine repair, automotive applications, can be used in daily repair, car repair, drilling machine, etc. 4Durable Material: Thread drill repair kit is made of high strength steel and plastic handle, easy to grip and operate, sturdy and durable in use. 5High Reliability: Professional manufacturing, high performance, strong reliability, M3x0.5 drill tap inserts tools are worth your trust.