... toughness,high hardness,flesural strength.It can withstand a lot of pressure,and it has a very with range of applicationPink ... fused aluminaPAPink,rose redHardness is similar to white alumina oxide,better toughness, it ... rubber bond,Polyvinyl Acetate ,etc..Grit size: 24-3000#,Hardness: a-zUsage: Cutting , grinding , sanding, slot, sharpening, grooving, ...