The 0.3960 CHK REAMER ST FL SS HS from Field Tool Supply is a precision reamer designed for finishing holes with a diameter of 0.3960 inches. Made from high-speed steel (HSS) and featuring a straight flute design, this reamer is ideal for achieving smooth, accurate hole sizes in various materials. Its stainless steel construction provides excellent corrosion resistance and durability, making it suitable for demanding applications. This reamer meets industry standards for quality and performance, ensuring reliability for professional users.