Caran d'ache Grafwood Graphite Pencils are professional artist pencils They are available in 15 different graduations from 9B to 4H. For specialists, a range of blacks from hardest to softest. Pencils with the most complete range of graphite leads. Each pencil is varnished in a colour that precisely depicts the hardness and depth of the black. Caran d'ache Grafwood Graphite Individual open stock Pencils .The pencils can be used to create tonal graduations, the B range is the softest, creating the darker tones, complemented by the H which allows light tones, placed together to create contrasting tones.