The 0.4210 CHK Reamer from Field Tool Supply is crafted for precision reaming in stainless steel and high-speed applications. With a diameter of 0.4210 inches, this high-speed steel (HSS) tool is ideal for achieving accurate hole sizes in various materials. Its durable construction ensures longevity, making it suitable for both manual and CNC machining environments. The reamer's standard finish promotes smooth operation, while its design meets industry standards for quality and reliability. Perfect for machinists and metalworkers, this tool enhances productivity and precision in diverse projects.