The COLLIS #71156 end mill from Field Tool Supply features a robust design ideal for precision machining. With a diameter of 1-3/8 inches and a 45° angle, this tool is crafted from high-speed steel (HSS) for durability and longevity. It is suitable for various applications, including milling and drilling in metalworking. The end mill is designed to provide excellent chip removal and surface finish, making it a reliable choice for professionals. Compatible with standard milling machines, it meets industry standards for quality and performance.