8mm Thickness Gray Penny Round Porcelain Mosaic Tile Discount Mosaic Tile!!! Hot Sale Porcelain Mosaic Tile Penny Round Porcelain Mosaic Tile Size: 12 x 12 x 0.3 In. (306 x 306 x8mm),Chip Size: 1x1 In. (25mm x 25mm) Color: Grey