These fine-point pens feature waterproof, quick drying, pigmented ink for permanency and true color reproduction. Used for graphics, drafting, illustration, or accounting. Experience smooth, skip-free writing and crisp ink colors that leave consistent lettering and lines every time. The archival ink is acid-free, chemically stable, and fade resistant. It does not smear, feather, or bleed-through on most papers. Brand: Sakura