Pentel EnerGel Gel-Ink Pen Refill, Medium Point, Blue Ink, 2/Pack (LRN7BP2C)

With the best qualities of liquid and gel ink, this Pentel EnerGel refill provides a smooth feel as your pen glides over the paper. Use it to extend the lifetime of your favorite pen, so you can write with confidence, even during a long meeting or class. The gel pen refill dries quickly for smudge-proof writing. Allows you to use your EnerGel pen over again.