Description
Keep your Fisher Space Pen writing smoothly in any condition with this Fisher Space Pen Refill Ballpoint Medium Nib, designed for precision and reliability. Whether you're jotting down notes on Earth or in zero gravity, this refill ensures your pen is always ready to perform.
Key Features
- Writes in extreme conditions, including freezing cold, boiling heat, underwater, and at any angle
- Features a tungsten carbide ballpoint and thixotropic ink in a hermetically sealed, pressurised cartridge at nearly 35 psi
- Fine Black Ballpoint with Parker-style SPR4F refill for smooth writing
- Writes upside down, underwater, and in temperatures from -35°C to 121°C
- Originally developed by Paul C. Fisher in 1965, still used in space missions today
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