Box of 15 natural charcoal sticks Ø9-15mm Faber-Castell Natural charcoal sticks are the world's oldest material for drawing and sketching. The blue-gray shadow glides smoothly across the paper, smears and blends easily, erases easily, and supports overlays. Its bluish tone has always caused admiration, even among old school teachers. Charcoal pencils allow you to draw much blacker lines. Charcoal mixed with soot and clay gives charcoal pencils their intense black color and can be manufactured in different graduations. Details: Pitt natural charcoal Ø 9-15 mm Not greasy Black-blue stroke Available independently and in different types of case