When sharpened to a fine point, these pencils are perfect for detail work done at the later stages of a drawing. They are made with compressed charcoal for rich, dark effects and precise, consistent strokes. It has a hard density.Details:Hard charcoal3.8 mm lead18 pencilsUniform, smooth strokesAchieve vivid charcoal linesCan be used for drawing, sketching, hatching, and smudging