The PR refill is a pressurised cartridge with a tungsten carbide tip. It lasts three times longer than alternatives and provides an unparalleled smoothness with every pen stroke. We stock the Fisher Space Pen Black PR4 and Blue PR1, each with a medium 1.1mm point size. Both cartridges have an estimated 100 years shelf life, will perform in temperatures from -30ºF to +250ºF, underwater, in zero gravity and virtually anywhere your journey takes you.
*Fisher Space Pen® Pressurized Ink Cartridge. ‘Fisher’ and ‘Space Pen’ are trademarks of Fisher Pen Co. Boulder City, NV U.S.A.