Set of 3 white coals in wood Gioconda Koh-i-noor

A set of 6 hangers (paper sticks) of different diameters, which will facilitate grinding of pencils, crayons, pastels, coal, sepia and sangwina. Thanks to them, the work will acquire the desired smoothness, the transitions between the colors will become smooth and tonal, and the colors will mix well. Hangers prevent fingers from getting dirty during rubbing. They can be cleaned with sandpaper or an eraser.