How does a ball point pen work?

How does a ball point pen work?

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How does a ball point pen work?

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What is this ball point!! Got this at work and I'm OBSESSED. It's

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Material: Made of PC, very durable, bring you a comfortable writing experience. Design: Each pen has a durable clip for easy portability and secures

Korean Flag Retractable Ballpoint Pen Portable Blue Ink Ball Point Pen Work Pens for Home Office 1 PCS