Nitram produces its charcoal using a unique process that maintains the wood’s cell structure which increases the charcoal's durability and helps prevent breakage. Nitram charcoal doesn't break like willow or vine do, and feels much less brittle.

Because of its solid strength, the charcoal can be sharpened to a fine point with the Nitram Sharpening Bloc. Also you produce less dust when working expressively. The charcoal allows for deep dark shades while still being easily erased for luminous light effects.

The Nitram Académie Fusains B is a soft square edged charcoal that produces a rich dark black. It's soft but can hold a point. If you are working on a piece that requires extra deep black then the Bloc de Saule is more black than the Nitram B.

Box contains 5 square charcoal stick.

Each stick is approximately 152mm long and 5mm wide.