Lionsteel Fisher Space pen refill Black medium SPR4 BK

Ink cartridge Fisher Space Pen - the most advanced ink cartridge in the world!

The Fisher Space Pen Co. has been providing pens and ink cartridges for the space program for over 45 years, with pens flying on every manned space mission and being used daily aboard the International Space Station. Based on technology developed by Paul C. Fisher in 1966, the Fisher Space Pen is designed to work reliably anywhere and everywhere. The pressurized ink cartridge inside the pen allows it to write at extreme temperatures (-34 degrees Celsius to 121 degrees Celsius), underwater, over grease, at any angle, and even upside down!