Caran d'Ache has drawn on its expertise and explored the deepest graphite mines to search out the infinite color nuances of carbon. The result is the Graphite Line, an original concept dedicated to graphite that gives artists the opportunity to compose their own graphite range and explore all the shades of black. An integral part of this line is the Grafstone woodless graphite pencil. Grafstone pencils contain pure graphite leads that can be adapted equally well to very large or very small formats. Available in 3 degrees of hardness, they are ideal for broad applications and, after careful sharpening, very precise drawing..