Ideal for mixed media, these pencils feature buttery smooth color lay-down providing excellent color opacity. Each pencil contains the highest quality pigments for unsurpassed lightfastness. They can be blended for layered effects, highlights and transitions. The extra-thick 4.3mm lead is housed in California cedar wood casing with SV bonding to strengthen lead and prevent breakage, while providing sharp fine lines and excellent point retention. They can be wiped like ordinary pastels. Gentle fixing is recommended.