The 1-1/16 3MT CT COUNTERBORE CI is a precision counterbore tool designed for use with 3 Morse Taper machines. With a cutting diameter of 1-1/16 inches, it is ideal for creating accurate recesses in various materials. Constructed from durable cast iron, this tool ensures long-lasting performance and reliability. It is suitable for a wide range of applications, including automotive and industrial machining. The counterbore's design allows for efficient chip removal, making it a valuable tool for machinists seeking precision and efficiency.