Satisfy your EnerGel needs with this refill that provides quality and value. It is equipped with rich, acid-free, and archival safe ink that is non-smearing and quick-drying, guaranteeing that your documents will be archived safely. Quick-drying ink is also great for lefties as writing won't smear away with touch. Global Product Type: Pen Refills-Roller Ball; Refill For Series: Pentel Energel Retractable, RTX, Deluxe RTX and Deluxe Liquid Gel Roller Balls; Pen Refill Type: Roller Ball; Special Ink Type: Gel.