Fisher Space Pen Black Fine Ink Refill SPR4F - Pressurized Refill For Upside Down, Underwater, And Through Grease

Replacement refill for Fisher Space Pens in black with a fine point. Designed for professionals who rely on dependable ink delivery in demanding settings, this SPR4F refill keeps your space pen ready for any mission.

• Ink color: Black
• Point type: Fine point for precise writing
• Ink delivery: Pressurized cartridge delivers consistent flow in any orientation and temperature
• Extreme-condition performance: Writes upside down, underwater, through grease, and in extreme temperatures
• Packaging: Hang packaged for easy display and stocking
• Compatibility: Replacement refill for Fisher Space Pens

With this SPR4F refill, you gain a reliable writing solution wherever your work takes you—from rugged outdoor sites to precision lab settings. The pressurized ink maintains legibility in cold or hot environments, even when writing at odd angles or through oil and grime. It’s ideal as a spare for field kits, service tools, dive cases, or emergency preparedness setups, ensuring you’re never left without a dependable pen. Swapping in the refill is straightforward, so you can stay on task without interruption.