Fisher Space Pen Refill Cartridge
The Fisher Space Pen pressurized ink cartridge, with ultra-hard tungsten carbide medium ballpoint tip, can fit almost any regular ballpoint pen or Fisher Space Pen.
Choose from black or burgundy ink.
Each cartridge is pressurized at 40 pounds of pressure making it able to write underwater, over grease, at any angle, upside down, 3-times longer than the average pen, in extreme temperatures ranging from (-30°F to +250°F), and in zero gravity. Typical ballpoint pen refills, which rely on the downward force of gravity to pull ink, are just not capable of the same performance.
Fisher Space Pen rose to prominence when founder Paul Fisher invented a retractable, pressurized pen called the Anti-Gravity 7 (#AG7) that worked flawlessly in zero gravity aboard the first manned Apollo mission in 1968. Five decades later the company continues to thrive with pens still flown aboard every manned space flight.