uni-ball Products - uni-ball - 207 Impact Roller Ball Retractable Gel Pen, Red Ink, Bold - Sold As 1 Each - Ultra-smooth, 1.00 mm writing action. - Vibrant, pigmented gel ink. - Features Uni-Super Ink&trade; that helps prevent against check and document fraud. - Auto-retractable tip. - Visible ink supply. Ultra-smooth, 1.00 mm writing action. Vibrant, pigmented gel ink. Features Uni-Super Ink that helps prevent against check and document fraud. Auto-retractable tip. Visible ink supply.