FEPA P grit,brown aluminum oxide grain for producing high ... used for producing all kinds of coated abrasives products, such as sand paper, cloth, rolls, belts, etc.Typical Chemical Analysis ... , 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, ...