---
product_id: 19162461
title: "Fisher Space Pen Point Pressurized Refill, Black Bold - SPR4B- Perfect for Your EDC Pen"
brand: "fisher space pen"
price: "S$28"
currency: SGD
in_stock: true
reviews_count: 13
url: https://www.desertcart.sg/products/19162461-fisher-space-pen-point-pressurized-refill-black-bold-spr4b-perfect
store_origin: SG
region: Singapore
---

# Writes smoothly at any angle Works from -30°F to 250°F Pressurized refill writes anywhere Fisher Space Pen Point Pressurized Refill, Black Bold - SPR4B- Perfect for Your EDC Pen

**Brand:** fisher space pen
**Price:** S$28
**Availability:** ✅ In Stock

## Summary

> 🚀 Bold ink that defies gravity and limits

## Quick Answers

- **What is this?** Fisher Space Pen Point Pressurized Refill, Black Bold - SPR4B- Perfect for Your EDC Pen by fisher space pen
- **How much does it cost?** S$28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/19162461-fisher-space-pen-point-pressurized-refill-black-bold-spr4b-perfect)

## Best For

- fisher space pen enthusiasts

## Why This Product

- Trusted fisher space pen brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lifetime Guarantee:** Confidence backed by a lifetime warranty—because your ideas deserve the best.
- • **Trusted by the Pros:** Used by astronauts, engineers, and explorers for unmatched durability and precision.
- • **Seamless EDC Upgrade:** Fits all Fisher Space Pens (except Infinium & Stick) for instant pen power boost.
- • **Write Bold, Write Anywhere:** Pressurized cartridge ensures flawless ink flow even upside down or underwater.
- • **Extreme Conditions? No Problem:** Reliable performance from freezing cold to scorching heat (-30°F to 250°F).

## Overview

The Fisher Space Pen Point Pressurized Refill in Black Bold delivers smooth, reliable writing in any environment—from zero gravity to extreme temperatures. Compatible with most Fisher Space Pens, this refill is trusted by astronauts and professionals alike, featuring a pressurized cartridge that writes upside down, underwater, and through grease. Backed by a lifetime guarantee, it’s the ultimate upgrade for your everyday carry pen.

## Description

desertcart.com : Fisher Space Pen Point Pressurized Refill, Black Bold - SPR4B- Perfect for Your EDC Pen : Pen Refills : Health & Household

Review: Reliable and long lasting. - My favorite replacement cartridge. Lasts a long time with daily use. Good price. I use it with my favorite pen that I've had for over 14 years.
Review: You get the value you pay for. - Still the quality I found in the late 1960s. Made in the USA in NV. As claimed, writes in any position and on poor-quality paper. Ink is bold and lasts for years with occasional use. The small size when closed, all-metal, smooth surface pen rides comfortably in a front pocket. You get the value you pay for.

## Features

- Black Bold Point Refill: The pressurized cartridge refills can be used in any pen from the Fisher Space Pen collection excluding the infinium and stick pens
- Write at any Angle: Fisher Space Pens are versatile and practical ballpoint pens that can smoothly write at any angle, even upside down with reliable performance on almost any surface
- Write in Extreme Temperatures: All Fisher Space Pens write in extreme temperatures ranging from -30°F to 250°F (-34° to +121°C), underwater, in space or any other harsh environment
- Quality and Reliability: Trusted by Astronauts, Explorers, and Professionals, Fisher Space Pens are often used in industries including Engineering, Aviation, Science, and Outdoor Adventures
- Explore The Fisher Space Pen Collection: Try our full collection of versatile and functional pens designed to write in Zero Gravity, Underwater, Through Oil and Grease and in Extreme Temperatures

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000FTGCFI |
| Best Sellers Rank | #69,329 in Office Products ( See Top 100 in Office Products ) #467 in Ink Pen Refills |
| Brand | Fisher Space Pen |
| Brand Name | Fisher Space Pen |
| Customer Reviews | 4.7 out of 5 stars 3,364 Reviews |
| Global Trade Identification Number | 00747609113419 |
| Ink Color | Black |
| Item Dimensions | 3.5 x 0.2 x 0.2 inches |
| Item Weight | 0.01 kg |
| Item dimensions L x W x H | 3.5 x 0.2 x 0.2 inches |
| Manufacturer | Fisher Space Pen |
| Manufacturer Part Number | SPR4B |
| Model Number | SPR4B |
| Number of Pieces | 1 |
| Point Type | Bold |
| Style | Bold Point |
| UPC | 747609113419 |
| Unit Count | 1 Count |
| Warranty Description | Lifetime Guarantee |

## Product Details

- **Brand:** Fisher Space Pen
- **Item Weight:** 0.01 kg
- **Item dimensions L x W x H:** 3.5 x 0.2 x 0.2 inches
- **Number of Pieces:** 1
- **Style:** Bold Point

## Images

![Fisher Space Pen Point Pressurized Refill, Black Bold - SPR4B- Perfect for Your EDC Pen - Image 1](https://m.media-amazon.com/images/I/61rvRl1YhDL.jpg)
![Fisher Space Pen Point Pressurized Refill, Black Bold - SPR4B- Perfect for Your EDC Pen - Image 2](https://m.media-amazon.com/images/I/71HXWKBKukL.jpg)
![Fisher Space Pen Point Pressurized Refill, Black Bold - SPR4B- Perfect for Your EDC Pen - Image 3](https://m.media-amazon.com/images/I/81vboZA-xpL.jpg)
![Fisher Space Pen Point Pressurized Refill, Black Bold - SPR4B- Perfect for Your EDC Pen - Image 4](https://m.media-amazon.com/images/I/71At+I3IqXL.jpg)
![Fisher Space Pen Point Pressurized Refill, Black Bold - SPR4B- Perfect for Your EDC Pen - Image 5](https://m.media-amazon.com/images/I/714uAVZexYL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

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

**Q: Will this fit the zebra sl-f1 mini ballpoint pen?**
A: That I do not know.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable and long lasting.
*by W***N on April 18, 2026*

My favorite replacement cartridge. Lasts a long time with daily use. Good price. I use it with my favorite pen that I've had for over 14 years.

### ⭐⭐⭐⭐⭐ You get the value you pay for.
*by A***S on October 26, 2025*

Still the quality I found in the late 1960s. Made in the USA in NV. As claimed, writes in any position and on poor-quality paper. Ink is bold and lasts for years with occasional use. The small size when closed, all-metal, smooth surface pen rides comfortably in a front pocket. You get the value you pay for.

### ⭐⭐⭐⭐⭐ An Original Refill for a Unique Pen!
*by B***5 on January 3, 2026*

I've had this pen for years and decided to get a refill for it. Forgot what a great pen this is. It is an original Fisher refill so the writing quality is excellent. Fast shipping and good packaging. Would highly recommend.

## 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

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**Shop now:** [https://www.desertcart.sg/products/19162461-fisher-space-pen-point-pressurized-refill-black-bold-spr4b-perfect](https://www.desertcart.sg/products/19162461-fisher-space-pen-point-pressurized-refill-black-bold-spr4b-perfect)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-09-03*