BiC® 4-Color™ 3+1 Retractable Ballpoint Pen and Pencil, 0.7mm Lead
BIC 4 Color Ballpoint Refills Medium Point Pack Of 4 - Office Depot
My Bic 4 Color - Project A: I took a Bic 4-Color Pro and at first swapped out the yellow ring (pita) to make it all black, but it honestly looks better
Bic 4 Colours Ballpoint Pen | 50,000+ Art Supplies | Your Art Superstore