The 0.3940 Carbide Chuck Reamer from Field Tool Supply is specifically designed for precision reaming in stainless steel. This high-quality tool features a carbide construction that provides exceptional hardness and wear resistance, ensuring a long service life. With a diameter of 0.3940 inches, it is ideal for creating accurate holes in various materials. The reamer is engineered for optimal chip removal, enhancing cutting efficiency and reducing downtime. Perfect for both professional machinists and DIY enthusiasts, this tool meets rigorous industry standards.