The 1-39/64 inch 4MT HS TS Drill by Field Tool Supply is crafted for precision drilling in various materials. This high-speed steel (HSS) drill features a 4 Morse taper (4MT) shank, ensuring compatibility with a wide range of machines. With a diameter of 1-39/64 inches, it is perfect for detailed work and offers efficient material removal. The HSS construction provides excellent durability and resistance to wear, making it a reliable choice for industrial applications. Ideal for use in CNC and manual drilling machines, this drill is designed to meet the needs of professional users.