Looking for a gel pen with ink that dries quickly, has a comfortable rubber grip at the base to write with, and wont cost you a fortune? Look no further than the Pentel EnerGel Roller Pen. This black, liquid gel pen features a retractable, .7 mm metal tip, giving you an ultra smooth, medium-width line to jot down notes with. The ink is acid-free. Uses LR7 ink refills.