This is one fine point Black ballpoint ink refill for the Fisher Space Pen. It can be used on its own in most Fisher Space Pens and with the included adapter in most pens that take Parker-style ballpoint refills.The sealed ink cartridge is pressurized at about 45 pounds per square inch and contains a visco-elastic, thixotropic, solid-gel ink. The result is a ballpoint pen that will write smoothly and dependably upside down, underwater, over grease, in extreme cold and hot temperatures and has an estimated shelf life of 100 years.
This is one fine point Black ballpoint ink refill for the Fisher Space Pen. It can be used on its own in most Fisher Space Pens and with the included adapter in most pens that take Parker-style ballpoint refills.
The sealed ink cartridge is pressurized at about 45 pounds per square inch and contains a visco-elastic, thixotropic, solid-gel ink. The result is a ballpoint pen that will write smoothly and dependably upside down, underwater, over grease, in extreme cold and hot temperatures and has an estimated shelf life of 100 years.
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