The #58 Cobalt Parabolic Stub Drill from Field Tool Supply is designed for precision drilling in hard materials. With a diameter of .0420 inches, this drill features a parabolic flute that enhances chip removal and minimizes friction, making it ideal for high-speed applications. Made from high-quality cobalt steel, it provides excellent durability and heat resistance, ensuring a long tool life. This stub drill is perfect for use in CNC machines and manual drills, offering versatility for various machining tasks. It adheres to industry standards for quality and reliability.