Natural charcoal sticks are the worlds oldest sketching and drawing materials. The greyish-blue shade glides softly across the paper, smudges effectively, is easily erased and can be repeatedly overlaid. Their blueish hue has always generated fascination. These charcoal pencils leave a pronounced black line. Compressed charcoal combined with soot and clay gives these charcoal pencils a deeper black colour and comes in different degrees of hardness. Degree of hardness: soft