Pilot G2 Retractable Rollerball Gel Pens, Ultra Fine Point, 0.38mm, Black Ink, 3 Count - Walmart.com
Pilot G-2 Gel Rollerball Pen, 0.7mm | Markersnpens.com
Brass Sport Rollerball Pen Refill | $6.00
Pilot G2 Retractable Premium Gel Ink Roller Ball Pens Extra Fine (.5) Dozen Box Black; Retractable, Refillable & Premium Comfort Grip; Smooth Lines to the End of Page, America's #1 Selling Pen