The Coarse Master Thread Repair Tool repairs and restores damaged or worn internal threads in mechanical components. It re-cuts existing coarse thread profiles to remove deformities or debris, ensuring proper engagement of fasteners, allowing controlled material removal without over-sizing the threaded hole. It helps restore thread integrity, enabling secure fastening and reducing the need for component replacement.Attributes:• Provides accurate thread re-cutting performance.• Restores damaged or worn thread profiles.• It is for a 3/8-inch diameter bolt with 16 threads per inch and a repair insert length of 9/16 inch (0.562 inch).• There are 6 inserts included in this specific package.Applications: The Coarse Master Thread Repair Tool is used in maintenance and repair applications to restore internal threads in components, ensuring proper fastener fit, reliable assembly, and extended component usability.