for making vitrified bonded grinding wheels Description:AETL is a very tough brown fused aluminum ... required.Applications:AETL is used for making vitrified bonded grinding wheels. The tough, strong aluminum oxide characteristic also enable this ... 36, 40, 46, 54, 60, 70, 80, 90, 100, 120, 150, 180, 220.Bulk Density: Grit(F) g/cc Grit(F ... 36 1.82 – 1.96 70 1.69 – 1.84 150 1.57 – 1.7120 1.91 – 2.05 40 1 ...