Fisher Space Pen Blue Ink Refill Fine Point SU1F - Pressurized for Upside Down, Underwater, Through Grease

The Fisher Space Pen Blue Ink Refill Fine Point SU1F is a pressurized blue ink cartridge designed to fit Fisher’s multi-action pens. Built for fieldwork and challenging environments, it delivers reliable writing where other refills fail.

• Ink Color: Blue ink provides high contrast for clear, legible notes and documents
• Point Type: Fine point for precise, tidy handwriting and detailed drawings
• Compatibility: Fits Fisher Space Pen multi-action pens (SU1F models) for easy replacement
• Pressure Technology: Pressurized cartridge enables writing upside down, underwater, through grease, and in extreme temperatures
• Packaging: Hang packaged for efficient stocking and quick display

This refill is ideal for technicians, outdoor professionals, first responders, and creative users who need dependable ink in demanding conditions. The pressurized design maintains a steady, consistent flow, reducing the chance of skips or blobs even when the pen is held at unconventional angles or exposed to moisture, grease, or extreme temperatures. Installing the SU1F refill is straightforward in compatible Fisher Space Pen models, so you can quickly swap in a fresh blue point for uninterrupted writing. When you choose this specific SU1F refill, you’re choosing reliability, longevity, and a vivid blue that stands out on any page or field notebook.