Abrasives Flexible Discs are used for polishing surface, grinding a flexible corner and curved surface Abrasives Flexible Discs are featured as the follows:With bending peculiarity and elasticity to grind good surfaceAbrasives: AC, GC and WAGrit numbers: 46, 60, 80, 100, 120, 180 and 220#Applications:AC, suitable for steel and iron GC, suitable for marble, aluminum, copper, cast iron and glassWA, ...