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. Isomars Willow Charcoal Box contains very fine charcoal. Has smooth mark, deep black hue and uniform texture. Contains around 25-30 sticks. Can be used alone or with other drawing media. May be smudged and blended with fingertips or a paper stump. Suitable for all levels of artistic levels. Spray finished work with fixative to avoid smudging, or use tissue paper as a divider when storing art work.