This set of three rice-paper stumps is ideal if you are working with pastel, charcoal or any other dusty media making the difficult job of blending these mediums much easier and cleaner. Sharpened to a point so that they can tackle even the smallest area of detail they can also be easily cleaned and re-pointed using a sandpaper block.This handy pack of 3 sizes ranges from 5.5mm to 10.5mm diameter.