Compressed Charcoal Sticks, Set of 16, Medium and Hard Grade Sketching Crayons | Art Supplies for Drawing and ShadingAdd Depth to Your Drawings with Our 16 Piece Compressed Charcoal Art Set Our compressed charcoal crayons are hard to medium grade, making them suitable for creating deep blocks of tone. You can use vine charcoal to create your initial sketch and then add compressed charcoal in layers to add more dimension and depth to your piece. What We Love About Our Charcoal for Drawing: Can create controlled, straight lines of various thicknesses. Adds rich and