Draw intense, deeply black lines and perfect facial expressions with this Pigma Sensei 10 with 1.0 mm bold fiber nib. The unique Sakura Pigma™ ink will not bleed through paper, is permanent, waterproof, fade resistant, quick drying and pH-neutral. Ideal for: Manga and Comic, Illustrating, Drawing, Lettering, Note-taking, Journaling and Sketching.