Lumograph Drawing and Writing Pencils are designed for sketching, drawing or writing on paper or matte drafting film. Super-bonded lead is especially break-resistant. Lines reproduce well. Pencils are easy to erase and sharpen. Tin contains 12 medium degrees: 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H and 4H.