brown fused alumina FEPA P grit, for making premium quality jumbo roll,sanding ... 95.03%TiO2 2.08%SiO2 1.29%Fe2O3 0.80% Physical Properties:Color RedShape Angular, edge sharpCrystal Form Alpha ... Material 0.0076% Grit Size 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 ...