Feature:1. Widely used in automobiles, rail car, military supplies, ships, home appliances, construction machinery, communication equipment, electronic products, engineering plastics, metal die castings, etc.2. The self-tapping screw sleeve has self-tapping ability, and the base material does not need to be tapped beforehand.3. Self-tapping screws have a maintenance effect on damaged threads.4. Thread repair can continue to use the same screws.5. Self-tapping screw sleeve is strong against vibration and prevents loosening.6. Installation is simpler, more convenient and faster.Specification:Item Type: Thread Repair KitScrew Material: Carbon steel plated zincScrew Sleeve Specification: M3 x 0.5Package List:1 x Twisted drill1 x Installation tool10 x Sheath