The 3-9/16 Shell Reamer STR FL HS by Field Tool Supply is a high-performance reaming tool crafted from high-speed steel (HSS). This reamer is specifically designed for precision hole enlargement and finishing, making it an essential tool for machinists and fabricators. With a diameter of 3-9/16 inches, it is suitable for a wide range of materials, ensuring clean and accurate results. The straight flute design allows for efficient chip removal, reducing the risk of clogging during operation. This tool adheres to industry standards, ensuring reliability and performance in various applications, including metalworking and woodworking.