Coated with a long-lasting 100/220 grit material that will outlast ordinary sandpaper, this convenient Sanding Pad can be used on substances such as fired ceramics, porcelain or wood to clean, finish, blend, deburr, scuff or condition the surface. The pad is stiff but has a foam core with different grits on each side. Easy to hold, it measures 2-7/8"L X 2"W and is only 1/8" thick. The pad can be used wet or dry.