The 3-flute countersink and counterbore cutter in HSS AISI M2, ground with CBN (cubic boron nitride), with a 90° head has a hardness of 63/64 HRC and a cylindrical shank....
The 3-flute countersink and counterbore cutter in HSS AISI M2, ground with CBN (cubic boron nitride), with a 90° head has a hardness of 63/64 HRC and a cylindrical shank....