Retractable gel pen contains specially formulated ink that helps prevent a common form of check fraud known as "check washing." Special formulated, uni Super Ink becomes trapped in paper, helping to prevent against water, fading and document fraud. Thick vibrant lines allow you to make a bold statement every time you write. Textured rubber grip offers superior writing and control while the retractable tip provides added convenience. Use the clip on barrel to attach the pen to notebooks, pockets and more. Uni-ball 207 Retractable Pen is refillable.