The DIE RLHS #4-40 X 1 OD from Field Tool Supply is a robust die designed for cutting external threads on rods and bolts. With a size of #4-40 and an outer diameter of 1 inch, this die is perfect for precision machining tasks. Constructed from high-speed steel, it offers excellent wear resistance and durability, ensuring a long service life. This die is ideal for use in various applications, including automotive and industrial settings, where accurate threading is crucial. Its design allows for easy handling and operation, making it suitable for both professional and hobbyist use.