Satisfy your EnerGel ® needs with this refill that provides quality & value. It is equipped with rich, acid-free, & archival safe ink that is non-smearing & 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. For All EnerGel ® Pens. Refill Format: Standard Gel; Refill for Series: Pentel ® EnerGel ® Retractable Liquid Gel Ink Pens; Refill Tip Type: Conical; Refill Point Size Type: Bold.