HORUSDY 348-Piece Thread Repair Kit, Metric & SAE Helicoil Set with HSS Drill Bits, Thread Inserts, Taps & Installation Tools, for Damaged Thread, Engine, Spark Plug & Automotive Repair

The HORUSDY 348-Piece Thread Repair Kit is your all-in-one fix for rethreading jobs. This professional-grade helicoil repair kit includes a full selection of SAE and Metric sizes—1/4", 5/16", 3/8", 7/16", 1/2", as well as M5, M6, M8, M10, and M12—covering the most common applications in automotive, machinery, and maintenance work. Each kit comes with HSS drill bits, precision screw taps, installation tools, break-off tools, and durable wire thread inserts, ensuring you have everything needed to create strong, long-lasting internal threads. The high-speed steel (HSS) drill bits and taps are engineered for excellent cutting performance and durability, allowing clean, precise threading on a wide range of materials, including aluminum, carbon steel, stainless steel, magnesium, and more. The 304 stainless steel thread inserts provide superior strength, wear resistance, and corrosion protection, making them ideal for both professional workshops and home garages. Everything is neatly organized in a rugged storage case for easy transport and quick access, so you can handle emergency repairs or regular maintenance with confidence.

• Complete 348-Piece Set: Includes everything needed for professional thread restoration — drill bits, taps, wire inserts, installation and break-off tools. Covers both Metric and SAE sizes, providing a one-stop solution for repairing stripped or damaged threads in metal components
• Premium HSS Drill Bits & Alloy Tools: Each drill bit is made from high-speed steel (HSS) for excellent hardness and precision cutting. The taps and installation tools are crafted from heat-treated alloy steel, ensuring durability and reliability under repeated use
• Wide Size Compatibility: Works with the most common thread dimensions: M5, M6, M8, M10, M12 and 1/4", 5/16", 3/8", 7/16", 1/2". Ideal for use on automotive engines, spark plugs, machinery parts, and other threaded components
• Efficient Thread Restoration: The 135° split-point drill bits create clean holes with minimal pressure. Combine them with precision-engineered taps and inserts to quickly restore strong, reliable internal threads and extend the life of your equipment
• Organized Carrying Case: All 348 tools and inserts are stored in a custom-molded case, keeping each component neatly arranged for quick access. Compact and portable, ideal for both professional mechanics and DIY enthusiasts