Winsor & Newton-Artist Vine Charcoal Sticks. A soft dark grey charcoal. It is perfect for large scale drawings or for filling in. It is easy to smudge and smear and get lots of effects that you can only achieve with charcoal! These sticks measure approximately 5- 3/4 inches long by 3/16 inch thick. This package contains three sticks of vine charcoal. Available in extra-soft, soft, medium, and hard (each sold separately). Conforms to ASTM D4236. Imported.