Sharpie
Sharpie S-Gel, Gel Pens, Medium Point (0.7mm), Black Ink Gel Pen, 4 Count
MUJI
Muji Gel Ballpoint Pen - Black - 0.5mm - Pack of 3
Pilot
Pilot Frixion Ball Erasable Gel Pen, Fine Tip (0.7mm) - Pack of 3 Gel Pens - Black, Blue, Red
BIC
BIC 4 Color Grip Original Ballpoint Pen, Bulk Pack of 10: Medium Point (1.0mm): Assorted Inks, Blue, Red, Green, and Black