For drawing or writing, you can't beat this remarkable pen. Water-based pigment ink pens produce smooth, skip-free drawing and writing. And because the ink dries instantly, you'll have no smudging. Durable nibs withstand firm pressure without bending the tips, ensuring steady ink flow. It's great for use with colored art markers and colored pencils. Produces excellent results with all papers, including drawing, marker, watercolor, and mix media paper. It's ideal for illustrations, technical drawings, lettering, and journaling. Create precise, detailed drawings with three tip sizes--01, 03, and 05. Odorless, bleed-resistant black ink is non-refillable.