PRECISE POINTS & LINES: Create precise marks that stand the test of time with professional inking pens used by comic artists, illustrators, watercolor artists, archivists, and laboratory professionals. SMOOTH WRITING: Experience smooth, skip-free writing in crisp, rich black ink that achieves consistent line widths that won’t smear, feather, or bleed-through most papers. ARCHIVAL QUALITY: Pigma pigment based ink is waterproof, chemical and fade resistant, bleed free, quick drying and pH neutral. Pigma ink colors are derived from single pigment colors for color consistency. JAPANESE QUALITY: Micron is the fineliner standard that delivers with precision. CERTIFIED NON-TOXIC: Approved by ACMI toxicologists & bears trusted AP Seal.