Xiem double-sided and washable Sanding Sticks are made from aluminum oxide grit on a firm backing. No sanding block is needed. They're perfect for sanding, shaping, refining, and finishing a variety of surfaces and materials such as woods, plastics, acrylics, alabasters, and ceramics—green wares and bisque wares. Available in a pack of two for fine, medium, or coarse grit.