The calligraphy pen by Sakura contains a soft brush tip pen to use for illustrating, handlettering, drawing, calligraphy and other decorative applications. The fine 1 mm tip allows for detailed calligraphy. The flexible, soft brush tip allows you to draw lines of different thicknesses. The unique Sakura Pigma™ ink does not run through paper and is permanent, waterproof, fast-drying, pH neutral and does not bleed.