A set of 5 x 5mm charcoal sticks in HB (medium), the most popular & widely used grade. The superior hold is perfect for homogenizing tones & retaining tonal detail. Finer lines are also possible, if the sticks are sharpened to a point ( Sharpener Block recommended). Nitram Charcoal is the preferred charcoal of professional artists, academies and ateliers around the globe due to it's unique qualities. Amazingly durable & less prone to breakage than standard willow & stick charcoals, thanks to their unique manufacturing process, which preserves the internal cell structure of the wood used. On top of this, they are easy to erase, sharpen to a point & generate much less dust than comparable materials.