Micro Mesh Sanding Discs Hook and Loop style (sold in packs of 5) With these discs and your 5" random orbital sander, you can polish the finish on large surfaces in half the time it would take using conventional materials. Use dry )no need to wet sand). Start with one of the lower grits to remove dust nibs and smooth the surface of the finish, then work up to higher grits until you reach the desired level of sheen.