Winsor and Newton - Vine Charcoal - Hard - Set of 24 - Winsor & Newton vine and willow charcoal is of the highest quality and carefully selected for uniformity without imperfections. Specially prepared for artists' use, the wood is correctly baked to produce an even line of consistent intensity. Vine charcoal produces a rich dark gray line whilst willow charcoal produces a velvety black line. Our charcoal is available in a variety of sizes and packs.