The TAPS LH(040) 5/8-12 GH3 T from Field Tool Supply is a left-hand tap specifically designed for threading 5/8 inch diameter holes with a 12 threads per inch (TPI) specification. Crafted from high-speed steel, this tap offers exceptional durability and performance in various metalworking tasks. The GH3 tolerance ensures precise threading, making it suitable for both professional and hobbyist applications. Its left-hand design is ideal for reverse threading needs, providing versatility in your machining projects. This tap is essential for anyone looking to achieve high-quality internal threads.