Caran d'Ache Luminance 6901 artists' pencils are the most lightfast permanent colour pencil ever designed. These are the tools of the professional, created with exhibition and collectible artworks in mind. Two years of technical research has resulted in superior-quality pencils that lay down vibrant, intense colours with a light resistance that complies with the highest international standard (ASTM D6901). The 3.8mm lead has a high pigment concentration and ensures maximum covering power. Available in a huge range of shades. Outer casing is produced from premium FSC-certified cedar wood.The creaminess of a permanent lead combined with unbeatable light resistance, Caran d'Ache Luminance 6901 pencils offer excellence for the most demanding artists, designers, architects, artistic directors, etc. A creamy, generous lead in a range of balanced colours with high pigment concentration. Recommended for mixing and shading, working blends or for shading and rubbing with the white pencil. Ideal for superimposing colours, shading, and unlimited mixed media combinations. Combine with SUPRACOLOR® Soft Aquarelle for wash drawings and watercolour effects in mixed techniques, or with PABLO® pencils for details, hatching and to colour numerous media. Product Details: Permanent, round, coloured pencils Permanent, creamy lead, 3.8 diameter, maximum covering power, high pigment concentration for intense, bright colours Light resistance complies with the highest international standards for light resistance in coloured pencils: ASTM D6901 Round, 8 ply, matt casing matches the colour of the lead, colour number and name indicated Premium FSC certified cedar wood ASTM D4236 compliant Available in assortments of 12, 20, and 40. Also available in a box containing 100 colours (+2 blenders). Click here for the Luminance Blender Developed and manufactured in Switzerland.