The 0.4070 CHK REAMER ST FL SS HS by Field Tool Supply is a stainless steel high-speed reamer designed for precision finishing of holes. With a diameter of 0.4070 inches, this reamer is perfect for applications requiring a smooth finish and accurate sizing. Its sturdy construction ensures durability and resistance to wear, making it suitable for both industrial and DIY projects. The straight flute design allows for efficient chip removal, enhancing performance in various materials. This reamer complies with industry standards, ensuring reliable results.