The Fisher Space Pen is a ballpoint pen that will write upside down, underwater, on top of grease, and in extreme cold and hot temperatures. It has an estimated shelf life of 100 years. Take that, crummy stick pen.
In 1967, after rigorous testing, NASA selected the Fisher Space Pen for use on the Apollo Missions. They are now used on all manned space flights - American and Russian. We figure if you can't BE an astronaut, you might as well write like one.
Each Space Pen comes with one ink cartridge. But just in case you plan on writing a novel by hand, we now have individual black ink refills available for purchase.
Features & specs: Dimensions: 3.75" (5.25" with cap) x 0.25" diameter Write underwater Write upside down Write on grease NASA Certified Refills: SPR4 medium pressurized