The Rotary Thread 8-pc Standard Thread Restoration Kit, No. RTK3.1, is designed to repair and restore all standard threads. The patented kit fixes inch, metric, SAE, and pipe threads no matter the size, length, or diameter without having to measure thread pitch. Each piece can be attached to a drill, die grinder, or Dremel tool. It features an embedded diamond super abrasive, tuned for smooth controlled damage removal. It’s lightweight and fixes most hard-to-reach threads.