---
product_id: 230618676
title: "4mm Synthetic Ruby Balls (16 Pack) – Precision Ruby Ball Inserts for CNC Probe Stylus, Jewelry Making, Beading, Bracelets & Crafts"
brand: "bandelt"
price: "E£ 1846"
currency: EGP
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.eg/products/230618676-4mm-synthetic-ruby-balls-16-pack-precision-ruby-ball-inserts
store_origin: EG
region: Egypt
---

# ±0.01 mm precision tolerance High-grade synthetic ruby hardness 4mm perfect size for versatile use 4mm Synthetic Ruby Balls (16 Pack) – Precision Ruby Ball Inserts for CNC Probe Stylus, Jewelry Making, Beading, Bracelets & Crafts

**Brand:** bandelt
**Price:** E£ 1846
**Availability:** ✅ In Stock

## Summary

> 🔴 Precision meets luxury — elevate your craft and measurements with ruby perfection!

## Quick Answers

- **What is this?** 4mm Synthetic Ruby Balls (16 Pack) – Precision Ruby Ball Inserts for CNC Probe Stylus, Jewelry Making, Beading, Bracelets & Crafts by bandelt
- **How much does it cost?** E£ 1846 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/230618676-4mm-synthetic-ruby-balls-16-pack-precision-ruby-ball-inserts)

## Best For

- bandelt enthusiasts

## Why This Product

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

## Key Features

- • **Versatile 16-Pack Value:** Stock up with 16 perfectly balanced balls, ideal for engineers, jewelers, and creatives alike.
- • **Luxury Meets Functionality:** Vibrant red, high-polish spheres elevate your jewelry and craft projects with a premium touch.
- • **Scratch-Resistant & Non-Porous:** Long-lasting brilliance and flawless finish guaranteed for professional-grade results.
- • **Pinpoint Accuracy for CNC & CMM:** Achieve flawless measurements with industrial-grade ±0.01 mm precision ruby balls.
- • **Unmatched Durability & Thermal Stability:** Synthetic ruby ensures wear resistance and consistent performance under pressure.

## Overview

These 4mm synthetic ruby balls deliver industrial-grade precision with a tight ±0.01 mm tolerance, crafted from durable, scratch-resistant synthetic ruby. Perfect for CNC probe styli, coordinate measuring machines, and sophisticated jewelry or craft projects, this 16-pack offers professionals and hobbyists a reliable, elegant solution that blends technical excellence with aesthetic appeal.

## Description



## Features

- CNC PROBE STYLUS REPLACEMENT — These 4mm synthetic ruby balls are primarily designed as high-precision tips for CNC probe styli and coordinate measuring machines (CMM). Their exceptional hardness and smoothness ensure accurate and repeatable measurements.
- INDUSTRIAL-GRADE PRECISION — Manufactured to a tight tolerance of ±0.01 mm, each ruby sphere offers consistent size and perfect balance. The material provides superior wear resistance and thermal stability for demanding mechanical and scientific applications.
- ELEGANT FOR JEWELRY & CRAFTS — Beyond industrial use, these brilliantly red, high-polish balls are perfect for creating unique jewelry pieces like bracelets, necklaces, and beaded art projects, adding a touch of luxury.
- PREMIUM SYNTHETIC RUBY MATERIAL — Made from high-grade synthetic ruby, these balls are solid, non-porous, and exceptionally hard, ensuring long-lasting performance and a brilliant, scratch-resistant surface.
- VALUE PACK FOR PROFESSIONALS — This pack includes 16 pieces of 4mm ruby balls, offering great value for engineers, machinists, jewelers, and hobbyists. Each ball is individually quality-checked for a flawless finish.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08FWWKXT2 |
| Batteries required | No |
| Best Sellers Rank | #28,373 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #1,274 in Beads & Bead Assortments |
| Brand | Bandelt |
| Color | Red |
| Customer Reviews | 4.5 4.5 out of 5 stars (338) |
| Item Weight | 0.01 ounces |
| Item model number | Ruby Pearls Balls |
| Manufacturer | Bandelt |
| Material | Glass |
| Number of Pieces | 16 |
| Package Dimensions | 2.01 x 1.77 x 0.94 inches |
| Shape | Round |
| Size | 4mm |
| UPC | 783926151680 |

## Product Details

- **Brand:** Bandelt
- **Color:** Red
- **Item Weight:** 0.01 Ounces
- **Manufacturer:** Bandelt
- **Material:** Glass
- **Number of Pieces:** 16
- **Shape:** Round
- **Size:** 4mm
- **UPC:** 783926151680

## Images

![4mm Synthetic Ruby Balls (16 Pack) – Precision Ruby Ball Inserts for CNC Probe Stylus, Jewelry Making, Beading, Bracelets & Crafts - Image 1](https://m.media-amazon.com/images/I/41i68Zdko-L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Pretty good for wax
*by J***E on April 14, 2025*

Work well with rigs and with peak pro. Some of them cracked, but that was likely user error on my end. Considering I lose these in the carpet frequently good value for the price

### ⭐⭐⭐⭐⭐ Great for pivots
*by S***9 on February 21, 2025*

Use these for my puffco pivot. Makes a wonderful difference and a reasonable price for how long they last me

### ⭐⭐⭐⭐⭐ Works well with Carta V
*by M***L on February 4, 2025*

They spin in my Carta V and keep the wax moving. These work well!

## Frequently Bought Together

- 4mm Ruby Pearls Balls Insert Ruby Ball for CNC Probe, Jewelry Making, Bracelets, Necklaces, Crafts, Laboratory Chemicals(16 Pack)
- Glob Mops XL Cotton Swabs 2.0
- Terp Wipes - Keep the Stick off your Stuff! (Single Pack)

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**Shop now:** [https://www.desertcart.com.eg/products/230618676-4mm-synthetic-ruby-balls-16-pack-precision-ruby-ball-inserts](https://www.desertcart.com.eg/products/230618676-4mm-synthetic-ruby-balls-16-pack-precision-ruby-ball-inserts)

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-02-24*