Fisher Space Pen Bullet Space Pen 400B-50 - Writes Upside Down And Underwater With 50th Anniversary Moon Phase Engraving

Fisher Space Pen Bullet Space Pen 400B-50 is a compact, mission-ready writing instrument designed for professionals and adventurers who demand reliability in any condition. Its matte black finish and 50th anniversary moon phase engraving give it a refined, collectible edge while delivering proven performance when you need it most.

• Compact, 3.75" closed design: Easy to carry in a pocket, notebook, or tool kit without sacrificing comfort or control.
• Matte black finish with 50th anniversary moon phase engraving: Distinctive styling that stands out and commemorates a milestone edition.
• PR4 pressurized ink cartridge (medium point): Delivers consistent writing in zero gravity, at any angle, underwater, over grease, and in extreme temperatures.
• Replaceable cartridge for long-term use: Simple to refresh with new ink to keep your pen writing smoothly over time.
• Boxed for gifting or storage: Ready to give or keep in your workspace or travel kit without additional packaging.

This pen is built for practical, real-world use. The pressurized PR4 ink ensures you can capture notes in challenging environments where other pens fail, making it ideal for fieldwork, laboratories, maintenance teams, and travel. The 400B-50 edition adds a touch of collectors’ value with a commemorative moon phase engraving, while its compact size makes it a reliable everyday carry. If you need a writing tool that stays/functions when it matters most, this Fisher Space Pen Bullet is a thoughtful, durable choice.