... , 2High-speed steel, High-carbon steel 1.silicon carbide fiber disc, has good flexibility, high Intensity ... steel grinding, grinding, rough grinding, higher anti-pulls Intensity metal grinding as well, i. ... durableSuitable for form grinding, knives, Measuring instrumentGreen silicon carbideGCgreenOnly no harder than Boron carbideSuitable for grinding ... i.e. single alundum silicon carbide fiber disc