The 0.4325 CHK Reamer by Field Tool Supply is crafted from high-speed steel (HS) for superior performance in precision machining. Measuring 0.4325 inches in diameter, this reamer is ideal for achieving clean, accurate holes in a variety of materials. Its straight flute design allows for efficient chip removal, making it suitable for both manual and automated processes. The stainless steel finish ensures resistance to corrosion, enhancing the tool's durability. This reamer complies with industry standards, making it a reliable choice for professionals in the metalworking industry.