The 4-in-1 ballpoint pen is with 4 ink colors( red blue green black). It's very nice that all the ink colors are in one pen, and the versatile 1.0mm
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Drawdart Multicolor Pen in One, Ballpoint Pen 4-in-1 Multi Colored Pens, Retractable Ball Point Pen 1.0mm, Cute Pens for Office School Supplies
Multi color inks (black, blue, red, green) in one pen. It's like you are having 4 retractable pens when you only have one. Perfect for notes taking
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