Nontoxic color block that never drys out! Avoid wasting paint and accidentally mixing colors together. Just moisten with your brush and use as a strong opaque color or as watercolor washes. Each color block measures 2-1/4 in. dia. x 11/16 in. thick and contains about 4 oz. of paint. Colors includes cerise, orange, violet, cobalt, turquoise, and yellow-green.