This fine-point pen features waterproof, quick-drying pigmented ink for permanency and true color reproduction. Ideal for graphics, drafting, illustration, or even accounting! Experience smooth, skip-free writing and crisp ink colors that leave consistent lettering and lines every time. The ink is acid-free, chemically stable, and fade resistant.Details:Black003 (0.15 mm)Archival quality inkWaterproof and fade resistantQuick dryingConforms to ASTM D-4236