The 0.3840 CHK Reamer from Field Tool Supply is a high-speed steel (HS) tool designed for precision reaming in stainless steel and other materials. Measuring 0.3840 inches, it is perfect for achieving smooth, accurate holes. The reamer's durable construction ensures it can withstand rigorous use, making it a reliable choice for professionals and DIYers alike. Its high-quality finish provides excellent wear resistance, ensuring longevity. This tool complies with industry standards, making it suitable for a variety of applications in machining and fabrication.