brown fused alumina FEPA P grit, for making premium quality jumbo roll,sanding belt stable ... Description:AHMCP is a red color, specially treatment angular grain shape, medium bulk density brown fused aluminum oxide abrasive, used for ... 2090 Knoop scale, 9.0 Mohs scaleMagnetic Material 0.0076% Grit Size Available (P):12, 16, 20, 24, 30, 36, ... aluminium oxide,fused alumina brown fused alumina FEPA P grit