Product details of Pentel Pentel Energel LRN5-C Gel Pen Refill 0.5mm Black Ink
Fresh colors, smooth writing, sharp lines, consistent, uninterrupted with Pentel's specially formulated ink
smooth gel ink Dries faster than normal gel ink. not greasy easy to change
Compatible with Pentel gel ink pens model EnerGel X, EnerGel Retractable, EnerGel Cap.