FEPA P grit,brown aluminum oxide grain for producing high quality ... It is one type of non-calcined Brown Fused Aluminium Oxide grain for coated abrasives application, the grain ... 80, 100, 120, 150, 180, 220.Microgrit Sizes Available (P):240, 280, 320, 360, 400, 500, 600, 800, ... Size Distribution :Upon ANSI B74.18-2006, FEPA-standard 43-1:2006 or ISO 6344-2: 1998 brown fused aluminum oxide FEPA P grit