Charcoal blocks can be shaped with a sanding block, The shavings can be used for smudging, providing the artist with a range of tonal values. These extra smooth, high quality blocks are excellent for drawing and sketching. The charcoal blocks produce a dense, velvety black, making them ideal for detail work or broad coverage on newsprint, bristol, coloured paper or heavily textured surfaces. Includes two each of #1 (soft), #2 (medium), and #3 (hard).