Porcelain Watercolor Palette - Rectangle - These porcelain palettes are amazing! They are very solid and unlike any other palettes on the market. The rectangular palette measures 15-1/2"x11-1/2"x1-1/4". There are 18 rectangular wells, 14 oval wells, and 3 large mixing areas. There are also holes in two of the corners to hold up to 8 brushes. The shiny porcelain surface makes clean up a breeze!