uni-ball 207 Retractable Medium Point Gel Pens, 4 Colored Ink Pens (1739927) Uni Super ink is specially formulated to become trapped in paper, helping prevent criminal check washing and other document alteration. Textured grip provides superior writing comfort and control making this pen truly a pleasure to write with. Stylish metallic accents with a high-quality finish. Archival-quality, acid-free ink is quick-drying and fade- and water-resistant. Set of eight pens includes one each of black, blue, sky blue, green, orange, pink, red, and purple.