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Q: Will these refills fit the Gerber 31-001880 Impromptu Tactical Pen?

It fits the Gerber pen just fine, but this medium point refill is broader than the original Gerber refill. If you like the original, get the Fisher fine point, which is very close. Both the Gerber and Benchmade pens use the plastic "Parker Adapter" that comes with the Fisher and "Rite in the Rain" refills - so Parker refills work as well, which gives you even more choices - for example the gel rollerball refills.

Q: Will these work for all fisher space pens? ...................i'm specifically interested in the fisher telescoping pen.

I suggest you go to spacepen.com to see Fisher’s offerings.

Q: Will these refills work with valtcan titanium cyberpen bolt pen edc writer gear stonewash

Don’t know. My pen is a Tuff Writer. I would ask this question to the manufacturer.

Q: Is a medium space refill as smooth as a zebra by gel refill?

I don't know as I've never used a zebra. However, I do know that the Fisher refills work. They write smoothly, maybe not as smooth as a gel, but it does glide easily as the ink is "thixotropic" - meaning attracted toward touch. i.e. once the pen is on the paper, the ink is drawn out, so it is a smooth glide as you write...Hope this helps

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🖋️ Never run dry on brilliance—refill your pen, recharge your hustle.

VIBRANT BLUE INK - Stand out with crisp, clear blue that commands attention on every page.
MEDIUM POINT PRECISION - Balanced line width for professional notes and bold ideas alike.
PRESSURIZED INK TECHNOLOGY - Writes smoothly in extreme conditions—gravity-defying ink flow for every task.
READY TO DISPLAY PACKAGING - Blister carded for easy pegboard display—perfect for quick grab-and-go refills.
UNIVERSAL TACTICAL COMPATIBILITY - Fits Fisher Bullet and top tactical pens like Smith & Wesson & UZI—upgrade your everyday carry.

This 3-pack of Fisher SPR1 blue ink refills features medium point tips with pressurized ink technology, ensuring smooth writing in any environment. Compatible with Fisher Bullet and most tactical pens, these refills come blister carded for convenient display and quick replacement.

Have a Question? See What Others Asked

Will these refills fit the Gerber 31-001880 Impromptu Tactical Pen?

Will these work for all fisher space pens? ...................i'm specifically interested in the fisher telescoping pen.

Will these refills work with valtcan titanium cyberpen bolt pen edc writer gear stonewash

Is a medium space refill as smooth as a zebra by gel refill?

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Manufacturer	Fisher Space Pen
Brand	Fisher Space Pen
Model Number	SPR1
Product Dimensions	15.24 x 1 x 17.78 cm; 27.22 g
Colour	blue
Number of Items	3
Size	3 Count (Pack of 1)
Point Type	Medium
Ink Colour	Blue
Manufacturer Part Number	SPR1
Item Weight	27.2 g

3 Pack Blue SPR1 Refills for Bullet Fisher Space Pen

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