Pigma Pigma ink, invented by Sakura over 30 years ago, continues to be the most reliable permanent ink on the market today. Artists, consumers, the government, and scientists consider Pigma Micron a necessary basic tool for any archival-quality, handwritten project. This permanent, fade resistant, chemically stable, pigment-based ink will not bleed or run if liquids are spilled on or applied to the document after the ink has dried. Perfect for legal situations, Pigma ink is nearly impossible to alter on documents, in log books, or on checks. Architects, archivists, anthropologists, entomologists and laboratories depend on Pigma Micron for record keeping. Manga artists, professional illustrators and watercolorists use the range of point sizes to create precision lines. Scrapbookers and crafters value its archival quality for preserving memories in journals, and notebooks. Use Pigma Micron to leave a mark that will last a lifetime. Sakura has enhanced the Pigma Micron experience with a new pen for everydaywriting! Loyal users of Pigma Micron requested a choice of nib suitable for every day, multi-purpose writing with the same quality Pigma ink performance. Introducing Pigma Micron PN - the durable Plastic Nib (PN) provides skip-free writing in eight popular Pigma ink colors. A fine or medium line width (0.4mm to 0.5mm) can be achieved, based on your personal writing pressure. The polyacetal nib structure allows for smooth ink-flow whether writing fast or slow, for right or left handed users, and for writing at an angle. Ideal for use on paper.