... perfect material specifically manufactured to be used for general abrasive applications in bonded and coated abrasive tools, lapping and polishing industry. It is also ... casting 3 Grit Size Available (F series for bonded abrasive and sandblasting, P series for coated abrasive)F series: F4, F8, F10, F12, F14 ... According to ISO, ANSI, FEPA and JIS. brown fused alumina for cut off wheels