The DIAMOND, which can be considered the hardest abrasive available at present, due to it’s outstanding hardness and wear resistance, it has been used widely in grinding nonferrous material, especially, in same bard and dense materials.

CUBIC BORON NITRIDE (CBN) is an abrasive which bridges the gap between conventional abrasives and the diamond. It is excellently for grinding the hard-to-grind ferrous materials where aluminum oxide or silicon carbide wheels fail to perform satisfactorily.