---
product_id: 19162461
title: "Space Pen Bold Point Pressurized Cartridge Refill, Black Ink, 1 Pack"
brand: "fisher"
price: "S$19"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/19162461-space-pen-bold-point-pressurized-cartridge-refill-black-ink-1
store_origin: SG
region: Singapore
---

# Writes at any angle, even upside down Writes from -30°F to 250°F Pressurized cartridge for smooth ink flow Space Pen Bold Point Pressurized Cartridge Refill, Black Ink, 1 Pack

**Brand:** fisher
**Price:** S$19
**Availability:** ✅ In Stock

## Summary

> 🖤 Bold ink that defies gravity and temperature—because your ideas deserve no limits.

## Quick Answers

- **What is this?** Space Pen Bold Point Pressurized Cartridge Refill, Black Ink, 1 Pack by fisher
- **How much does it cost?** S$19 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-space-pen-bold-point-pressurized-cartridge-refill-black-ink-1)

## Best For

- fisher enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Durable:** Brass cartridge design weighing just 0.35 oz, built to last through your busiest days.
- • **Trusted by the Pros:** Used by astronauts, engineers, and adventurers who demand precision and durability.
- • **Versatile Compatibility:** Fits all Fisher Space Pens except Infinium and Stick models for seamless upgrades.
- • **Extreme Temperature Proof:** Reliable performance from freezing cold to scorching heat (-30°F to 250°F).
- • **Write Bold, Write Anywhere:** Pressurized refill ensures consistent black ink flow on any surface, any angle.

## Overview

The Fisher Space Pen Bold Point Pressurized Cartridge Refill delivers smooth, bold black ink that writes flawlessly at any angle, even upside down. Engineered to perform in extreme temperatures from -30°F to 250°F, this refill is trusted by astronauts and professionals alike. Compatible with most Fisher Space Pens, its durable brass construction ensures long-lasting reliability for everyday and extreme use.

## Description

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

## 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 |
|---------------|-------|
| Manufacturer | Fisher Space Pen |
| Brand | Fisher Space Pen |
| Item Weight | 0.352 ounces |
| Product Dimensions | 3.5 x 0.2 x 0.2 inches |
| Item model number | SPR4B |
| Is Discontinued By Manufacturer | No |
| Color | Black |
| Material Type | brass |
| Number of Items | 1 |
| Size | 1 Count (Pack of 1) |
| Point Type | Bold |
| Ink Color | Black |
| Manufacturer Part Number | SPR4B |

## Product Details

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

## Images

![Space Pen Bold Point Pressurized Cartridge Refill, Black Ink, 1 Pack - Image 1](https://m.media-amazon.com/images/I/719ArlKsjtL.jpg)

## Available Options

This product comes in different **Color, Style** 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.

## 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-space-pen-bold-point-pressurized-cartridge-refill-black-ink-1](https://www.desertcart.sg/products/19162461-space-pen-bold-point-pressurized-cartridge-refill-black-ink-1)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-22*