These large chunks of charcoal are made for those who are not afraid of getting their hands dirty. The Charcoal Chunk may vary is size and weighs approximately 8 ounces. The Charcoal Block is a smaller size, ideal for toning papers and creating powder & texture and is approximately 3 oz. These pure charcoal chunks and blocks are great for bold strokes and large scale figure drawing. The charcoal is super smooth and bold, packed in a re-sealable bag for storage.