Blockx 24 Half Pan Watercolor Set Half pan watercolor set comes with 24 half pan watercolors and includes a mixing area Blockx watercolor is made in belgium since 1865 by the blockx family, 5 generations of chemists. Highest quality pure pigments ensure maximum color strength and quality, all colors are lightfast. To achieve the best properties for pan colors, liquid watercolor paste is poured in the pans three times to compensate for evaporation Rare, tough pigments are thoroughly crushed, then coated in gum arabic and honey