The Nuvo watercolor pencils add a smooth watercolor effect to your project. They work effortlessly with a variety of different techniques. The pencils can be mixed with water to blend, layer and combine illustrative elements in a range of tones and shades. With a soft, highly pigmented core, the bold and vivid colors ensure your designs always stand out. The pencils can be used over a larger surface area to create beautiful washes or subtle backgrounds. Details:Includes multiple colors12 watercolor pencilsLead is not permanent, colors can be reworked after dryingConforms to ASTM D4236