The 0.1680 CHK REAMER SF SS HS from Field Tool Supply is a precision reamer designed for finishing holes to exact sizes. With a diameter of 0.1680, this reamer is made from high-speed steel, ensuring durability and precision. It is suitable for use in stainless steel and other hard materials, making it ideal for various machining applications. The straight flute design allows for efficient chip removal, providing a smooth finish. This reamer is perfect for both professional machinists and DIY enthusiasts, delivering reliable performance in precision tasks.