Koh-I-Noor Copying Pencils allow you to write with indelible ink on paper, cotton and other textiles without fear that the mark will be erased. Copying pencils feature high quality pigments and dyes which aids in their smoothness and longevity once used. Available in shades of Blue and Red. Each pencil is 7 mm thick, with a 3 mm lead and 175 mm long.