... grain for coated abrasives application, the grain shape is very sharp, the strip and needle shape are well kicked out of the grains Applications ... , 9.0 Mohs scaleMagnetic Material 0.0076% Macrogrit Sizes Available (P):12, 16, 20, 24, 30, 36, 40, 50, 60, 80 ... , 100, 120, 150, 180, 220. Microgrit Sizes Available (P):240, 280, 320, 360, 400, 500, 600, 800, 1000, 1200 ...