The 0.5210 CHK REAMER ST FL SS HS by Field Tool Supply is a high-speed steel reamer designed for precision hole finishing. With a diameter of 0.5210 inches, this reamer is perfect for achieving smooth, accurate holes in stainless steel and other tough materials. Its straight flute design allows for efficient chip removal, reducing the risk of clogging during operation. This tool is engineered to meet industry standards, ensuring reliability and performance in various applications. Ideal for machinists and fabricators, this reamer is a must-have for any workshop.