Pigma Micron Fineliner Pens feature archival-quality, waterproof, and fade-resistant ink, ideal for acid-free environments. These black pens prevent smears, feathers, and bleed-through on most papers and are certified non-toxic with the trusted Ap Seal. Use them for graphic art, scrapbooks, archival recording, illustrations, stamps, and cartooning. Handle smaller nibs gently to avoid bending. With seven precise sizes, Pigma Micron is trusted by artists and professionals for lasting, reliable lines.