5Calling all artists! Add drama to your artwork with these Scratch and Sketch(TM) Art Tiles. Use the included stylus to scratch the black coating, creating drawings and designs in swirling colors and glittery foil. Set of 150 Scratch and Sketch(TM) Art Tiles for artists and crafters of all levels. Keep a set with you for creative expression on the go! Tiles measure 3-1/2" square (9 cm square).