Fisher Space PenSPR4B Point Pressurised Refill black/bold

Fisher Space PenSPR4B Point Pressurised Refill black/bold

Q: Is there a difference between the spr4 and the pr4?

The "PR" stands for Pressurized Refill and the PR4 is the black refill that fills most of the standard Fisher Space pens and other similar pens. If the code ends in a "B", then it's a bold, or ends in a "F" then it's a fine point. The numeric value after the PR indicates the color (1= blue 2=red, 3=green, 4=black, etc. I believe that the "SPR" simply means that the package includes the little plastic adapter piece that makes the refill Parker compatible. All my refills are the SPR version and work in either Fisher Space Pens (without the plastic adapter) or in my Parker Jotter pens (with the adapter). BTW - Fisher also makes refills with a label "C" like C1 or C4 which are for Cross pens.

Q: Will this refill work in a Bullet space pen?

Greg K,This refill does work correctly in several Bullet Space Pens I purchased!

Q: What is the tip size? I like a solid 1.0, would that be medium or bold?

I would have to say this is more of a medium than a bold. Most 1.0 pens that I have purchased like the Pilot G-2 or Uniball 207 Gel Impact are bold, which I prefer. The Fisher Space Pen refill is less so to me, but still good. What I REALLY like about the Fisher is how exceptionally smooth the ink flow is.

4.7/5

Product ID: 276577405

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Details

Brand
Fisher Space
Style
Rollerball
Item dimensions L x W x H
8.9 x 0.5 x
Point type
Bold
Item weight
0.01 Kilograms

⏳100-year shelf life

🖊️Pressurized ink tech

❄️🔥Works -30ºF to +250ºF

Frequently Bought Together

Fisher Space Pen Bold Point Pressurized Cartridge Refill, Black Ink, 1 Pack

Fisher Space Pen Chrome Bullet Pen, Ballpoint, Brass, Black Ink

Description

🖋️ Write beyond limits—because your ideas deserve space-grade precision.

BOLD BLACK INK - Make your mark with rich, bold black ink that stands out in every professional setting.
LIGHTWEIGHT COMPACT - At just 10 grams and under 9 cm, it’s the perfect refill for on-the-go leaders and innovators.
UNIVERSAL FIT ADAPTER - Comes with a plastic adapter to fit any standard ball pen refill—upgrade your favorite pen instantly.
WRITE ANYWHERE ANYTIME - Pressurized ink cartridge ensures smooth bold lines underwater, in zero gravity, or extreme temperatures.
CENTURY LONG RELIABILITY - Ink sealed to last up to 100 years, so you’re always ready for the next big idea.

The Fisher Space Pen SPR4B is a pressurized refill designed to deliver bold black ink flawlessly in extreme conditions—from freezing cold to scorching heat, underwater, and even zero gravity. With a universal adapter and a remarkable 100-year shelf life, it’s the ultimate upgrade for professionals who demand reliability and performance in every stroke.

Specifications

Manufacturer	Fisher Space Pen
Brand	Fisher Space Pen
Model number	SPR4B
Product Dimensions	8.89 x 0.51 x 0.51 cm; 10 g
Color	black/bold
Material Type	Plastic
Number of Items	1
Size	1 Count (Pack of 1)
Point Type	Bold
Ink Color	Black
Manufacturer Part Number	SPR4B
Item Weight	10 g

Have a Question? See What Others Asked

Is there a difference between the spr4 and the pr4?

Will this refill work in a Bullet space pen?

What is the tip size? I like a solid 1.0, would that be medium or bold?

Will this fit the zebra sl-f1 mini ballpoint pen?

Common Questions

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Smooth transaction and product arrived in perfect condition.

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