Premium grade HSS piloted Counterbores with Morse Taper Shank M16-M24. Other sizes up to M30 available on request. For producing countersinkings for cylindrical head screws, thread-cutting screws Ideal for burr- and chatter-free deburring and countersinking. Suitable for use on structural grade steels, cast iron & non-ferrous metals. Suitable for use with any morse taper shank drilling machine. Best results at low cutting speeds. Conform to DIN 373
