Experience smooth, skip-free writing in crisp, rich black ink to achieve consistent lettering and lines widths. Sakura Pigma Micron pens are professional inking pens used by comic artists, illustrators, watercolor artists, archivists, and laboratory professionals. Pigma ink is archival quality on paper: waterproof, chemical resistant, fade resistant, bleed free, quick drying and pH neutral. No smears, feathers, or bleed-through on most papers. Precise line widths make this fine line pen set ideal for drawing and writing. Includes one pen of each size: 005 (0.20mm), 01 (0.25mm), 02 (0.30mm), 03 (0.35mm), 05 (0.45mm), 08 (0.50mm).