The 1-7/8 4MT CT COUNTERBORE CI from Field Tool Supply is a high-performance counterbore tool designed for creating flat-bottomed holes in various materials. With a diameter of 1-7/8 inches and a 4MT shank, it is compatible with standard milling machines and lathes. Made from durable cast iron, this counterbore ensures stability and precision during operation. Ideal for precision machining, it allows for accurate depth control and smooth finishes. This tool is essential for applications requiring precise hole preparation and is suitable for both professional and hobbyist use.