Precision Thread Restoration System: 
Taps (22pcs) re-cut internal threads in nuts/engine mounts with UNC, UNF, Metric options, ideal for spark plug holes & transmission cases. Dies (24pcs) rebuild external threads on axles/studs, featuring three cutting profiles: UNC for structural bolts, UNF for high-torque suspension parts, Metric for import vehicles. 3 Thread Files clean & reshape damaged threads on motorcycle chains/agricultural equipment before precision repair. Three size standards cover 98% automotive/industrial fasteners Easy to Use: Simply clean, align, and spin the chaser for easy, hassle-free repairs using color-coded, clearly labeled chasers and a simple procedure. The hex-shaped taps and dies are appropriate for rethreading wheels, spindles, axles, and bolts and are compatible with wrenches and sockets Red High-Visibility Storage Case: A blow molding box, which can sustain high-strength extrusion without deforming and shield the product from harm, ensures instant visibility in crowded toolboxes or workshops, making it easy to spot even in low-light conditions.The box's groove may effectively stop wear by limiting the free movement of thread repair equipment Exclusive Design: The hexagonal shape of these taps and dies makes them ideal for rethreading. They are compatible with wrenches, sockets and are suitable for cleaning tasks involving wheels, spindles, axles and bolts Wide Application: Suitable for a wide range of industries, including automotive repair and mechanical manufacturing. These thread chasers repair damaged threads in key components, such as engine oil holes and threaded machinery parts Red Professional Thread Repair Tool: 49pcs thread chaser set with 3 thread files in SAE sizes and 22 taps, 24 dies in UNC, UNF, and Metric sizes—1/4", 3/8", 5/8", 1/2", 5/16", 7/16", and 9/16" as well as M6, M8, M10, M11, M12, and M14. Assisting in the repair of broken bolts, nuts, and studs' internal and exterior threads