Staedtler blending stumps in pencil form! For almost all smudgeable artist's materials such as charcoal, pencil, chalk and pastel crayons. Bring the colors in your artwork to life with this non-pigmented, wax based pencil. Perfect for blending and softening edges of colored pencil artwork without altering your palette. Blending pencils are ideal for blending and softening hard edges in pencil drawings--all without changing your color palette.