Tips: If you encounter any difficulties during installation, please contact us for a detailed installation guide. It effectively restores stripped, worn, or damaged threads with internal threads that are stronger than most parent materials. The kit features an easy-to-use design and includes all the essential tools, including aircraft-quality stainless steel inserts PACKAGE CONTAINS: 1 PCS Counterbore, 1 PCS Drill, 1 PCS Tap, 1 PCS Install Driver, and 10 PCS Stainless Steel Inserts (14MM length). Shop Thread Repair Kits Online for Automotive Tools & Equipment - Vietnam Metric Thread Insert Kit With Tools Kolvoii M10X1.25 Thread Repair Kit, Metric Helicoil Kit With HSS M10x1.25x14mm Inserts Avoids tooth misalignment and tooth extraction. Precision Thread Repair Kits repair stripped or damaged threads in any metal and can be used in new die castings and plastics. Kit contains M10X1.25 tap, installation tool, and 10 inserts. Precision inserts are helical coils of 18-8 stainless steel wire EXTRA-LONG LIFESPAN: The solid 304 stainless steel insert creates stronger internal threads, offering superior strength and durability compared to helical coils. See product images for detailed dimensions.