FEPA P grit,brown aluminum oxide grain for producing high ... abrasives application, the grain shape is very sharp, the strip and needle shape are well kicked out of the grains ... 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, ...