Thread Repair File restores damaged threads on bolts, screws, pipes, and fittings. It has a varying thread pitch of 11, 12, 13, 14, 16, 18, 20, 24 T.P.I., making it suitable for a wide range of applications. The thread repair files are made of high carbon steel, ensuring durability and long-lasting performance. They can also be used as a screw pitch gage, making them a valuable addition to any toolbox.