General Tools Thread Repair File, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3 m is an excellent tool designed to restore damaged external threads on a wide range of items, including studs, bolts, screws, plumbing pipes, and pipe fittings. When threads become worn, rusted, or corroded, this thread repair file provides an effective solution. Crafted from high carbon steel and featuring a black oxide coating, it is built to handle tough jobs while resisting rust for enhanced durability and longevity. Beyond thread repair, this versatile tool also functions as a screw pitch gauge, allowing precise measurement of thread distances. Its dual functionality makes it a valuable addition to any toolbox, ing both repair and measurement capabilities in a compact design. Whether you are a professional tradesperson or a DIY enthusiast, the General Tools Thread Repair File is a dependable tool for maintaining the integrity of your fasteners. Model Number: 177-8