Staedtler Mars Lumograph Writing, Drawing, Sketching Pencil (Box of 12) (2H) All degrees are evenly graded, and are distinctly marked on the end of each pencil. The wide range of degrees makes Lumograph the ideal tool for artists and graphic designers. Especially break resistant super-bonded lead. Lines produce well. Easy to erase and sharpen. Also available in other degrees of hardness.