These Sakura Pigma Micron Manga Basic fineliners are water-based and, once dry, permanent. They incorporate Pigma ink, known for its fast-drying properties, high pigment, fade resistance, and water resistance. The ink is bleed-proof on most papers and will not spear or feather when dry. This Manga Basic set includes black Pigma Brush Pens in 0.2, 0.25, 0.45 and 0.5 mm.