Extra nice design: 0.5 mm medium point makes it easy to write and assures smooth writing or drawing experience; Suitable for office, business, executive, students, writers and anyone who writes a lot; Writes smoothly on most surfaces, excellent for every day use. Transparent case: transparent ink pen tube has a unique design with a transparent pen case, you can clearly see the ink supply, which have good quality ink and will not leak ink, even if you use for a long time. Quickly dry: liquid gel ink dries so fast, no smears, no smudges, no globs; Free-flowing ink provides smooth, crisp application. Wide application: ballpoint pen to sketch, draw, color, doodle, write and get creative in a fun and skilled way; Greeting cards, party invites, letters to friends and family, arts and crafts, decoration. Package includes: come with 12 packs black ink pens, the roller ball pens come with extra fine point (0.5 mm) and black/red/blue ink for precise writing, small and delicate, fashionable and durable.