... polishing the surface is smooth 3.low cost Diamond Polishing sheet 1.Main feature:*2.Diamond polish film use on ceramic , stainless steel ... graded materials on uniform polyester backing.*4.9,6,3,1 um diamond polish film and 0.05 um aluminum oxide polish ... grade: 9 um , Diamond , Blue ( 3M-9D ) 6 um , Diamond , Clear ( 3M-6D ) 3 um , Diamond , Pink ( 3M-3D ) 1 um , Diamond , Lavender ( 3M-1D ...