The #27 Check Reamer from Field Tool Supply is a high-speed steel (HSS) tool designed for precision reaming in stainless steel and other hard materials. This straight flute reamer features a 1/4-inch diameter, making it ideal for creating smooth, accurate holes. The HSS construction provides excellent durability and wear resistance, while the straight flute design enhances chip removal efficiency. This reamer is compatible with various drilling machines and is perfect for both professional and DIY applications, ensuring reliable performance and precision in every use.