Precision Thread Chaser Set: Featuring a carefully selected range of metric sizes including M121.75, M121.5, M121.25, M101.5, M101.25, M81.25, and M6*1.0. This set includes a thread restorer file for enhanced efficiency and accuracy. Specialized Thread Repair Kit: Designed for restoring worn threads, removing stubborn dirt, and combating corrosion while preserving metal integrity. Ensures flawless thread restoration. Essential for Automotive Work: A must-have tool for mechanics, ideal for repairing rusty fasteners, bolt holes on cylinder heads, and vehicle bodies. Delivers unmatched precision and functionality. Premium Quality Construction: Made from high-grade carbon steel for superior strength and durability. Hexagonal design on dies and taps ensures compatibility with wrenches or sockets for easy use. Convenient Storage and Organization: Comes with a compact storage case to keep all components neatly arranged. Clearly stamped sizes on tools and case for quick identification, improving workflow and craftsmanship.