Isomars Paper Stumps are excellent for blending and smoothing pastels, charcoals, graphite or any other dry media. Can be used to smoothly blend shaded areas, soften lines and mix colors without using your fingers. Can be easily sharpened with a sanding block or a pencil knife. Charcoal pencils are made with compressed charcoal for rich, dark effects and precise, consistent strokes. Ideal for drawing, sketching and smudging with a paper stump. When sharpened to a fine point, they are perfect for fine detail work at the later stages of a drawing.