The 0.4215 CHK Reamer from Field Tool Supply is a high-speed steel tool designed for precision reaming tasks. With a diameter of 0.4215 inches, it is perfect for achieving accurate hole sizes in stainless steel and other tough materials. This reamer is built for durability, ensuring it withstands the rigors of repeated use in both manual and CNC machining applications. Its standard finish promotes smooth operation, while its design adheres to industry standards for quality and reliability. Ideal for machinists and metalworkers, this tool enhances productivity and precision in various projects.