Double sided and washable Sanding Sticks are made from aluminum oxide grit on a firm backing. No sanding block is needed. They are designed specifically for sanding, shaping, refining, and finishing on greenware and bisqueware. They also work on wood, plastics, acrylics, and alabaster. Available in a pack of two. Size 1.25″ x 7″ Grit are fine, medium, and course.