Supracolor Watercolor Pencils feature super soft, very strong 3.6 mm water-soluble lead with exceptional covering power and excellent light fastness. Lead is encased in color-coded shaft made from California Cedar. Use for shading, cross-hatching, graded applications, watercolor effects, washes and mixed media. The metal collector's box provides the buyer with a visual and "collector" colours that are only available in a limited edition of 9'000 articles.