Pentel Hyper-G Gel Retractable Roller Ball Pen, Medium Point, 0.70 mm, Black Barrel, Black Ink, 12-Count  (KL257-A)
Experience security with this liquid gel roller ball pen. Permanent, waterproof and acid-free ink. Check-safe. Global Product Type: Pens; Pen Type: Roller Ball; Special Ink Type: Permanent; Acid-Free; Indelible Gel Ink; Pen Style: Retractable.