Pro Art Palette Plastic Heavy Duty 21 Well - Made of durable, solvent-resistant plastic, this heavy-duty palette features 21 wells. Sixteen 1.38"x 1.31" slant wells; four 1.38"x 2.63" slant wells, and a 6.75"x 10.25" center slanted well. Palette measures approximately 9.38"x 13.25".