Fisher Space Pen Universal Refill D1

Dependable in Any Environment
Fisher Space Pen’s sealed, pressurized refill cartridge writes in the most extreme conditions — from -30ºF to +250ºF, underwater, in zero gravity, and at any angle (even upside down).

Trusted by Professionals
Chosen by ski patrols, search and rescue teams, law enforcement, and the armed forces, these refills are built for anyone who needs reliability they can count on.

Compatibility
This is a specialized refill used in the Fisher Q4 Multi-Action Space Pen.
The Universal refill is compatible with some pens that use a D1 refill. Please verify specs below.

Customizable Lengths
Universal refills have break-off notches, allowing you to easily adjust it to the correct length for different pens. Simply snap at the appropriate notch to create the perfect fit. The refill starts at 3.83" and can be shortened to 3.43" or 2.64".

Available Point Options - Fine Only
Blue Fine (0.9mm) Black Fine (0.9mm) Red Fine (0.9mm)

Please Note
Universal refills contain a much smaller amount of ink compared to the Fisher Pressurized Refill (PR). Universal refills write approximately 1200 feet (depending on your writing style and surface), as compared to our PR refill, which write approximately 12,000 feet (depending on style and surface). The Universal refill is not interchangeable with the PR refill.