One Fisher Pressurized SPR Series Black Ink / Fine Point Refill #SPR4F

Description

One #SPR4F Black Ink / Fine Point Ink Cartridge
This Listing is for ONE (1) New Fisher Space Pen "SPR" Series Black Ink / Fine Point Refill (#SPR4F) for a Fisher Space Pen. This refill was developed for NASA and has been used on EVERY Space Shuttle mission both American and Russian. They are hermetically sealed with a specially formulated thixotropic ink and pressurized to about 35 PSI. They are the only refills that will write at any angle because they do not rely on gravity, and have a shelf life of 100 years. The bottom paragraph tells more about the Fisher story. The SPR Refills come in a variety of colors and points. This pressurized refill will write at any angle even upside down, freezing cold and blistering heat, even under water. The SPR Series Refills fits all Fisher Pens except for the Triple action or Quad action pens; they take the "SU" Series.  Each refills also come with an adapter so they will fit Parker and Parker style Pens as well as the Fisher Pens. Just click on the store icon on this listing and that will take you to our store. Then on the left hand side of the page is a list of categories, Click on SPR Series Refills to see them all. Often Imitated but never Duplicated.
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