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.

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.

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.

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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Fisher Space Pen SPR1, Refills for Bullet, Blue, 3 Piece

Product ID: 7614002

Details

Brand
Fisher
Item Weight
18.14 g
Item dimensions L x W x H
6 x 0.39 x 7
Number of Pieces
3
Style
Space

🔵Vibrant blue medium point

♻️Long-lasting refill durability

🖊️Pressurized ink flow

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Sold byAmazon CongoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🪐 Write beyond limits with Fisher Space Pen refills!

TRUSTED BY PROS - Preferred by astronauts, military, and professionals who demand reliability and style.
PERFECT MEDIUM POINT - Balanced 0.7mm tip for professional, clean, and precise writing every time.
DURABILITY MEETS DESIGN - Compact, snap-closure refills built to last through your busiest workdays and adventures.
UNIVERSAL COMPATIBILITY - Fits multiple iconic Fisher Space Pen models and Parker-style pens with adapters.
WRITE ANYWHERE ANYTIME - Pressurized refills deliver smooth ink flow in zero gravity, underwater, or extreme temperatures.

Fisher Space Pen SPR1 refills feature pressurized ink technology ensuring smooth, skip-free writing in any environment. Designed with a medium point and vibrant blue ink, these durable refills fit a wide range of Fisher pens and Parker adapters, making them the go-to choice for professionals and adventurers alike.

Specifications

ASIN	B00610ZUJE
Best Sellers Rank	#149,920 in Office Products ( See Top 100 in Office Products ) #1,105 in Ink Pen Refills
Brand Name	Fisher
Customer Reviews	4.8 4.8 out of 5 stars (929)
Global Trade Identification Number	00747609889567
Ink Color	Blue
Item Dimensions	6 x 0.39 x 7 inches
Item Weight	18.14 g
Manufacturer	Fisher Space Pen
Manufacturer Part Number	SPR1
Model Number	SPR1
Number of Pieces	3
Package Size Name	3-Pack
Point Type	Medium
Style	Space
UPC	747609889567
Unit Count	1.0 Count
Warranty Description	30 days

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