Pentel EnerGel Liquid Gel Pen Refills, Bold Point, 1.0 mm, Red Ink - These Pentel EnerGel refills feature high-performance ink technology that combines the best qualities of liquid and gel ink for a super-smooth writing experience. Quick-drying ink in the liquid gel pen refills is ideal for lefties - no smears, no smudges and no globs. The 1.0 mm metal tip produces crisp, bold lines.