* 12 CERAMIC COASTER TILES CRAFT KIT - Pixiss Unglazed Ceramic Tiles are perfect for creating your own coasters with alcohol ink (requires glazing first), markers, crayons, acrylic paint, resin, and more. Our tiles are specifically designed to be used for arts and crafts with all sides perfectly smooth and with a matte finish. * HIGH-QUALITY CRAFT TILES - Pixiss Coaster Tiles are made of durable ceramic. All sides are smooth, unlike our competitors whose tiles are rough and have nubs on the sides and patters on the back. * CRAFT TILES SIZE - Our tiles are just under 4-inches so they fit in normal coaster holders. Our competitors are 4" to 4 1/4" inches which makes their coasters too big to fit in the average coaster holder.