The absolute finest-quality, artists drawing pen for art & graphics. Pens feature pigmented India ink, which is both acid free and archival (pH neutral). Smudge proof and waterproof when dry, the ink contains the highest quality pigments for unsurpassed lightfastness (resistance to fading). Highly permanent after drying. Recommended by leading Manga artists. Includes one each of Extra Fine, Superfine, Fine and Medium point drawing pens.