TWO Fisher SPR Series Black Ink / Medium Point Refills #SPR4

Description: Two (2) #SPR4 Black Ink / Medium Point Ink Cartridge This Listing is for Two (2) New Fisher Space Pen "SPR" Series Black Ink / Medium Point Refill (#SPR4) 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. About Fisher Space Pen: Fisher Space Pen is yet another great breakthrough from space research. No other pen has so much to offer. This pen was designed in 1965 by Paul C. Fisher, for NASA, and with no cost to NASA or our government. Ordinary pens rely on gravity to write. Hold them upside down and they quit. There was a need for a pen that would work in the zero gravity vacuum of space, and in extreme conditions. Paul Fisher developed such a pen. For the ink cartridge to write at any angle the cartridge was charged with 35 PSI of nitrogen. A small ball type float was used to separate the gas charge from the ink and it had to be hermetically sealed to hold the charge. With that type of pressure a precision fit stainless steel machined socket with a tungsten carbide ball and a specially formulated thixotropic ink was used keep the pen sealed and leak free. Fisher Space Pens have been used on EVERY Space Shuttle mission, both USA and Russian. They were also featured on a Seinfeld episode. ..... Imitated but never duplicated..... Because it is hermetically sealed it will not dry out like other pens and has a shelf life of over a hundred years. It does not rely on Gravity, It writes upside down, in the vacuum of space, on wet paper, underwater, in the freezing cold of -30° F, and the boiling heat of 250° F. Fisher Ink cartridges stay leak free and writing longer, cleaner, and more consistently than any other ink cartridges. Fishers are not only utilized by Astronauts but the Thunderbirds, the Blue Angels, the Navy Seals, and the Canadian Snowbirds also use the Fisher pen. Fishers are favorites among Firefighters, Paramedics, and Police Officers. We have even sold them to Tow Truck operators is Alaska that needed a pen to write in subzero conditions. If you count on a pen to work, you need a pen with a Fisher ink cartridge. The Fisher Bullet Pen was exhibited at the New York Museum of Modern Art. It has been featured on the Tonight Show, Good morning America, John Ratzenberger's Made in America, and an episode of Seinfeld. Still proudly made here in the USA and I can tell you first hand Fisher Space Pen Company is made up of great people. Fisher has a wide variety of pens to fit almost anyone’s wants and needs in a variety of price ranges. Pens from the economy line that are gas pressurized, Plastic barrels, and not refillable at about $5.00 to the Infinium Series Pens that is warranted to never run out of Ink for a lifetime at about $150.00. Of course, there are many series in between so you are sure to find the pen that fits your needs and style. All of this brings me ask the question, “Sure you could buy another pen, but why would you?” Fisher refills come with an adapter to fit them to Parker and Parker Style ballpoint pens. Fisher also makes pressurized refills to fit Cross style pens. See the Fisher line by visiting our eBay store. Just clicking on the store link, then select the category you would like to see from the list on the right hand side of the page. Thank You From Cyber Pen Sales

Price: 14.32 USD

Location: Lake Placid, Florida

End Time: 2024-02-06T01:57:37.000Z

Shipping Cost: 4 USD