... P grit for producing sanding belt,sanding paper,sand cloth,jumbo roll,fused abrown,corundum,brown aluminium oxide Description:AP-17 ... Mohs scaleMagnetic Material 0.0076% Macrogrit Sizes Available (P):12, 16, 20, 24, 30, 36, 40, 50, 60, 80, 100, 120 ...