---
product_id: 111134610
title: "Hollow 3\" steel ball weldable DIY project component (5-pack)"
brand: "weldiy"
price: "£73.41"
currency: GBP
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.uk/products/111134610-hollow-3-steel-ball-weldable-diy-project-component-5-pack
store_origin: GB
region: United Kingdom
---

# 5-pack for versatility 3" steel diameter Ideal for fitness projects Hollow 3" steel ball weldable DIY project component (5-pack)

**Brand:** weldiy
**Price:** £73.41
**Availability:** ✅ In Stock

## Summary

> 🔧 Build, Create, Inspire!

## Quick Answers

- **What is this?** Hollow 3" steel ball weldable DIY project component (5-pack) by weldiy
- **How much does it cost?** £73.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/111134610-hollow-3-steel-ball-weldable-diy-project-component-5-pack)

## Best For

- weldiy enthusiasts

## Why This Product

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

## Key Features

- • **Join the DIY Revolution:** Share your creations and inspire others in the maker community!
- • **Unleash Your Creativity:** Transform your ideas into reality with these versatile components.
- • **Durable Steel Construction:** Built to last, these hollow balls withstand the test of time.
- • **Stylish Decorator's Choice:** Use as unique fence post finials or eye-catching decorative elements.
- • **Perfect for Fitness Enthusiasts:** Craft your own grip training tools and elevate your workout game.

## Overview

This 5-pack of 3" hollow steel balls from Columbus Design & Manufacturing is perfect for DIY welding projects, fitness tools, and decorative elements. Weighing just 13 ounces, these durable metal components are designed to help you bring your imaginative projects to life.

## Description

3-in hollow steel ball manufactured from low-carbon steel, ready to weld. these are not precision ball bearings, these are hollow (1/8" thick steel) and meant for decorative or low-precision work.

Review: Perfect - These are perfect for our needs. Outdoor banner poles.
Review: Very unique item - These are way heavier than expected. Easy to weld on. I would recommend and buy again

## Features

- DIY welding project component - 3" hollow steel ball
- With a welder & imagination, you can build anything; we supply the hard to find components so nothing gets in your way
- 3" steel balls commonly used to make fitness & ninja warrior grip training tools
- 3" steel ball works well as a fence post finial or any decorative element in a project
- Leave a photo in your review and show us what you built using these 3 inch spheres

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Columbus Design & Manufacturing, LLC |
| Part Number | 300BL-5 |
| Item Weight | 13 ounces |
| Product Dimensions | 3 x 3 x 3 inches |
| Item model number | 300BL-5 |
| Is Discontinued By Manufacturer | No |
| Material | Metal |
| Shape | Circular |
| Item Package Quantity | 5 |
| Number Of Pieces | 5 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Hollow 3" steel ball weldable DIY project component (5-pack) - Image 1](https://m.media-amazon.com/images/I/81ezBJScAAL.jpg)

## Questions & Answers

**Q: Are these available in stainless steel?**
A: No.

**Q: Are these available in 3/4"?**
A: 3" ball

**Q: How much does each sphere weigh?**
A: 13oz, just under 1 pound

**Q: Are these threaded? If so, what size screw?**
A: These are not threaded. They are hollow and are meant for welding.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect
*by T***T on April 23, 2025*

These are perfect for our needs. Outdoor banner poles.

### ⭐⭐⭐⭐⭐ Very unique item
*by M***N on May 18, 2023*

These are way heavier than expected. Easy to weld on. I would recommend and buy again

### ⭐⭐⭐⭐⭐ Spheres of energy
*by A***A on April 8, 2021*

We have ordered and welded onto our new steel deck and spiral staircases, more than 30 of these spheres. They are of excellent quality. Hard to find but worth it.

## Frequently Bought Together

- Hollow 3" steel ball weldable DIY project component (5-pack)
- Hakko CHP-170 - Micro Soft Wire Cutter
- Thermaltronics TMT-TC-2 Tip Tinner (20g) in 0.8oz Container

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**Shop now:** [https://www.desertcart.co.uk/products/111134610-hollow-3-steel-ball-weldable-diy-project-component-5-pack](https://www.desertcart.co.uk/products/111134610-hollow-3-steel-ball-weldable-diy-project-component-5-pack)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-21*