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-space-pen-pr-series-pressurized-ballpoint-pen-refill/
Best Ballpoint Pens of 2022: https://unsharpen.com/best-ballpoint-pens/
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