The 4.50MM CHK Reamer from Field Tool Supply is crafted for precision finishing of holes. This reamer features a 4.50mm diameter and is made from high-speed steel (HSS) for enhanced durability. Ideal for use in stainless steel and other tough materials, it ensures a smooth finish and accurate sizing. The reamer is designed to fit standard chuck sizes, making it compatible with a variety of drilling machines. Perfect for both professional machinists and hobbyists, this tool is essential for achieving high-quality results in metalworking projects.