Charcoal is a drawing material that can be used to express a wide range of subtle shades, such as blur and soft tones. Since it is difficult to stick to paper, it is made with a special charcoal coal. The willow charcoal is essential for drawing, and the willow is made from high heat and has a slightly bluish color. High heat treatment creates a consistent, smooth drawing. Willow Charcoal B. Soft Willow / Medium / Round / Pack of 3 / Silver Paper Rolls