Uni-Ball Signo 207E Rollerball Gel Pen Black (Pack of 12) 308668000This Uni Ball Signo 207E Rollerball Pen contains super smooth gel ink, which is fade resistant, water resistant and tamper proof. The 0. 7mm tip writes a 0. 5mm line width for everyday use at home, school, or in the office. The pen has a convenient retractable design, comfortable rubber grip and a transparent barrel for monitoring remaining ink levels. This pack contains 12 pens with black ink. Rollerball pen with ultra smooth gel ink Medium 0. 7mm