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Amazon.com : Bic 4 Colours Fluo Ballpoint Pen Black, Blue, Red and Fluorescent Yellow Ink Colours 1 Pack : Office Products
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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
4- Color Multi- Function Ballpoint Pen, Retractable, Medium 1 mm, Black/ Blue/ Green/ Red Ink, Blue/ White Barrel - Pens | BIC®
BIC 4 Color Retractable Ballpoint Pen Medium Point 1.0 mm Blue Barrel Assorted Ink Colors Pack Of 3 - Office Depot
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