Caran d'Ache Art by Cd'A Dry Pastel 83mm Black Pack of 6The finest quality hard dry pastels and drawing pencils for professional and student artists. ART By Caran d'Ache products are ideal for sketching, figure drawing and portraits. Highest quality pigments. Excellent lightfastness. Techniques: painterly drawing, fine ruling, solids, line drawing, and graded effects. Charcoal drawings and hard dry pastel images can be fixed with the Blair Art Products fixative. Due to the fragile nature of the charcoal and pastel pencils it is recommended to only use sandpaper for sharpening.