Sakura Pigma Micron Pen Set, Black Ink, 6-Pen Set (005, 01, 02, 03, 05, 08). These fine-point pens feature 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.