Testing 10, 20, 30, and 40-Year-Old Fisher Space Pen Refills

If you have a Space Pen, then you know it has an extraordinary refill. But did you know that some of these refills still write after 20 years in a pen? Some still write after 30 years. We talk a lot about how long the ink in these refills last and how well they write under crazy conditions, but their longevity is downright impressive as well.

Fisher PR Refills Explained: https://unsharpen.com/refill/fisher-s...

Best Ballpoint Pens of 2022: https://unsharpen.com/best-ballpoint-...

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