The DIE RRSHS 2 1/2-4 X 4 OD from Field Tool Supply is a high-speed steel threading die designed for precision threading tasks. Featuring a diameter of 2 1/2 inches and 4 threads per inch, this die is ideal for creating coarse threads on larger rods and pipes. The 4-inch outer diameter allows for easy handling and compatibility with standard threading machines. Made from durable high-speed steel, it ensures longevity and reliability in various applications. This die is an essential tool for machinists and metalworkers looking for accuracy and efficiency in their threading operations.