Designed by water media master, Stephen Quiller. Since 1988, thousands of painters, craftspeople and interior decorators have used this color wheel to help them with color relationships and color mixing. Over 70 highly lightfast artist tube colors are located on the wheel in the order that the painter can have the most accurate analogous, complementary and triad mixes. Ideal for the professional or student. The wheel is coated with a plastic laminate and includes instructions. 8-1⁄2 " × 8-1⁄2"