Conté Sketching Crayons (also known as Carrés) are harder than pastels or charcoals. This hardness creates crisp, tight lines rather than the more smudged look of pastel and charcoal. They are manufactured using natural pigments (clay and a binder) and are then baked and dried. The degree of baking varies the grade (hardness: H / softness: B) of the black and white crayons.
Use the edge of the crayon to produce energetic lines & details or its flat side to apply larger areas of colour.