Sakura Pigma Micron drawing pen. The first disposable technical pen to use archival pigment ink, the Micron range is by favoured artists, writers and illustrators everywhere. PIGMA© ink has become the defining standard for reliable, permanent, archival quality ink. Archival quality ink is acid-free, chemically stable, waterproof, and fade resistant. No smears, feathers, or bleed-through on most papers. Strong plastic tip is steel clad for strength and for use against rulers and drawing instruments. Set of 3 black pens in tip sizes 08, 10 and 12. Perfect for scrapbooking and all paper crafts. 8 different nib sizes in black ink. Archival quality Pigma ink is waterproof and fade resistant. Ink will not smear or feather. Will not bleed through on most papers.