Pentel

Pentel Refill Ink for EnerGel Liquid Gel Pen, 0.5mm Needle Tip, Black (LRN5-A), 12-Pack

The official refill for the Pentel EnerGel 0.5 mm retractable pen. Same smooth liquid gel ink, same needle tip precision — so you never have to give up your favourite pen. Comes in a pack of 12.

"Once you have the EnerGel pen, you will want to keep it going forever. These refills make that easy. The ink is identical — smooth, quick-drying, and consistently black — and the 12-pack means you are stocked for a long time. Swapping the refill takes seconds. It is the kind of small, sensible purchase that just makes life a little more organised."