Product Description:

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

【24-Hour After-Sales Service】 If you have any questions, please contact us and we will handle it properly within 24 working hours.

348-Piece Thread Repair Kit, Metric & SAE Helicoil Set with HSS Drill Bits

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