The 1-3/16 CT SS COUNTERBORE STL from Field Tool Supply is a high-performance counterbore tool designed for precision machining. With a 1-3/16 inch cutting diameter, it is ideal for creating flat-bottomed holes in various materials, including stainless steel. The tool is constructed from high-speed steel, ensuring durability and resistance to wear. Its design allows for easy chip removal and smooth operation, making it suitable for both professional machinists and hobbyists. This counterbore is compatible with standard drill chucks.