Refill for Mark's Style Colors Gel Ball Pen's.
Made by Ohto Japan.
Kaweco G2 Gel Rollerball Refill
$ 7.00
Energel Tradio Gel Pen Refill: Black - Craft Design Technology
$ 2.00
Zebra Sarasa Grand Refill 0.5mm - Sepia Black
$ 2.25
Zebra Sarasa Grand Refill 0.5mm - Green Black