The 45/64 CHK Reamer by Field Tool Supply is engineered from high-speed steel (HS) for exceptional strength and longevity. This reamer measures 45/64 inches, making it perfect for precision hole enlarging in various materials. Its straight flute design facilitates efficient chip removal, ensuring a clean finish. This tool adheres to industry standards, providing reliability and performance in metalworking applications. Ideal for machinists and fabricators, the 45/64 CHK Reamer is a must-have for achieving accurate and smooth results in your projects.