... 60HRC:High hardness, sharp edges remain during operation, mainly used for marble cutting,characters: stable and reliable performance,even size , good ... resistance,more sharp for cutting, cut fast, and make the marble with a more smooth surface. Comparison for bearing steel grit ... and workers’ health. Angular bearing steel grit used for marble cutting , skype:qt.1131 QQ:1742625742 Tel:008615966055683