Caran D'arche Grafwood Graphite Pencils

The Caran d’Ache graphite pencil is pleasant to hold and available in an endless range of subtle tones, from charcoal to light grey. Its exceptional performance sets it apart.
 
It's hexagonal shape and extra fine graphite lead makes it easy to hold, control and use. It comes in 15 gradations so you can use  different shades.