The 0.3490 CHK REAMER SF SS HS from Field Tool Supply is a precision reaming tool designed for achieving accurate hole sizes in various materials. Constructed from high-speed steel (HSS), this reamer offers excellent durability and wear resistance, making it suitable for demanding applications. With a size of 0.3490", it is ideal for finishing holes to precise dimensions, ensuring a smooth and accurate fit. This tool is perfect for both professional machinists and DIY enthusiasts, meeting industry standards for quality and performance. Its design allows for efficient chip removal, enhancing overall productivity.