Pentel Gel Pen, Needlepoint, Nonrefillable, 0.5mm, Blue Ink Writes as smoothly as a fountain pen, without the mess. Can be used at any angle without skipping. Uni Super ink is specially formulated to become trapped in paper, helping prevent criminal check washing and other document alteration. Acid-free, fade- and water-resistant ink lasts over time. Classic design with a brushed steel look for a professional appearance.