1 AL2O3 content:95.70% 2 grit size:F12-F220 3 for bonded abrasive and polishing 4 comply with FEPA standard ... the material reaches about 1900kG/mm2. Specific gravity (density) equals 3.90+/-0.05cm3. Bulk density depending on size equals 1 ... , F320, F360, F400, F500, F600, F800, F1000, F1200,F1500,F2000P series: P8, P10, P12, P16, P24, P30, P36, P40, P50, P60 ...