Pigma ink, invented by Sakura over 25 years ago, continues to be the most reliable permanent ink on the market today. Artists, consumers, the government, and scientists all rely on the proven permanence of Pigma. This 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. Manga artists, professional illustrators and watercolorists use the seven point sizes to create precision lines. Sakura's smallest size yet, 003, makes fine details distinct. Perfect for cross hatching, inking pencil lines, and making standalone pen sketches. Made in Japan.