---
product_id: 126173206
title: "4pcs EN31 Rustproof Steel Smooth Rod 8mm OD 500mm (0.5 mtr) Long for CNC Robotics Machines DIY Projects"
brand: "invento"
price: "¥7313"
currency: JPY
in_stock: true
reviews_count: 8
category: "Invento"
url: https://www.desertcart.jp/products/126173206-4pcs-en31-rustproof-steel-smooth-rod-8mm-od-500mm-0
store_origin: JP
region: Japan
---

# 8mm precise diameter 500mm length for versatile builds EN-31 hard chromed rustproof steel 4pcs EN31 Rustproof Steel Smooth Rod 8mm OD 500mm (0.5 mtr) Long for CNC Robotics Machines DIY Projects

**Brand:** invento
**Price:** ¥7313
**Availability:** ✅ In Stock

## Summary

> 🛠️ Build Bold, Build Precise – The Rods That Keep Your Projects Moving Smoothly!

## Quick Answers

- **What is this?** 4pcs EN31 Rustproof Steel Smooth Rod 8mm OD 500mm (0.5 mtr) Long for CNC Robotics Machines DIY Projects by invento
- **How much does it cost?** ¥7313 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/126173206-4pcs-en31-rustproof-steel-smooth-rod-8mm-od-500mm-0)

## Best For

- invento enthusiasts

## Why This Product

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

## Key Features

- • **Value Pack:** Includes 4 rods, giving you the ideal quantity to power multiple projects or prototypes without compromise.
- • **Trusted Quality:** Rated 4.3 stars by 261 professionals, making it a reliable choice for serious makers and engineers.
- • **Versatile Length:** At 500mm, these rods fit perfectly into a wide range of 3D printer, CNC, and DIY applications.
- • **Precision Perfect:** Engineered with an exact 8mm outside diameter for flawless alignment in CNC and robotics projects.
- • **Durability Unmatched:** Crafted from EN-31 hard chromed steel ensuring rustproof longevity and smooth operation over time.

## Overview

INVENTO’s 4-pack of 8mm OD, 500mm long EN-31 hard chromed steel rods deliver rustproof durability and precision for CNC, robotics, and 3D printing projects. Trusted by over 260 users with a 4.3-star rating, these smooth rods offer professional-grade quality and versatility for your DIY innovations.

## Description

Package contents: 4 x 8mm EN-31 Rods; Application: 3d printer, cnc, robotics, diy projects etc. ; Material: En-31 (hard chromed), Outside Diameter: 8mm, Length: 500 mm (0. 5 meter)

Review: GREAT PRODUCT AT A GOOD PRICE - NO RUST so far after 6 months. GOOD PRICE
Review: These are Iron rods Not ss rods - Quiet value for money but are iron rods.

## Features

- Outside Diameter: 8mm
- Length: 500 mm (0.5 meter)
- Material: EN-31 (Hard Chromed)
- Qty: 4pcs
- Application: 3D Printer, CNC, Robotics, DIY Projects etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07RRJN298 |
| Best Sellers Rank | #48,472 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #203 in 3D Printer Parts & Accessories |
| Brand | INVENTO |
| Brand Name | INVENTO |
| Colour | Grey |
| Country of Origin | India |
| Customer Reviews | 4.3 out of 5 stars 261 Reviews |
| Item Diameter | 0.32 Inches |
| Item Dimensions | 13 x 34 x 502 Millimeters |
| Item Form | Rod |
| Item Shape | Cylindrical |
| Item Thickness | 8 Millimetres |
| Item Type Name | INVENTO 4pcs EN31 Rustproof Steel Smooth Rod 8mm OD 500mm (0.5 mtr) Long for CNC Robotics Machines DIY Projects |
| Item Weight | 500 Grams |
| Item dimensions L x W x H | 13 x 34 x 502 Millimeters |
| Manufacturer | INVENTO, No |
| Manufacturer Contact Information | No |
| Material | Steel |
| Material Type | Steel |
| Model Number | ISC 121-2 |
| Number of Items | 4 |
| Part Number | ISC 121-2 |
| Shape | Cylindrical |
| Specification Met | True |
| Unit Count | 4 Count |

## Product Details

- **Brand:** INVENTO
- **Colour:** Grey
- **Item dimensions L x W x H:** 13 x 34 x 502 Millimeters
- **Material:** Steel
- **Shape:** Cylindrical

## Images

![4pcs EN31 Rustproof Steel Smooth Rod 8mm OD 500mm (0.5 mtr) Long for CNC Robotics Machines DIY Projects - Image 1](https://m.media-amazon.com/images/I/41g5ZIMzgoL.jpg)
![4pcs EN31 Rustproof Steel Smooth Rod 8mm OD 500mm (0.5 mtr) Long for CNC Robotics Machines DIY Projects - Image 2](https://m.media-amazon.com/images/I/61AATfaQYRL.jpg)
![4pcs EN31 Rustproof Steel Smooth Rod 8mm OD 500mm (0.5 mtr) Long for CNC Robotics Machines DIY Projects - Image 3](https://m.media-amazon.com/images/I/51GOUurGtUL.jpg)
![4pcs EN31 Rustproof Steel Smooth Rod 8mm OD 500mm (0.5 mtr) Long for CNC Robotics Machines DIY Projects - Image 4](https://m.media-amazon.com/images/I/31KRI9Nn2AL.jpg)

## Questions & Answers

**Q: can we bend this rod 90' for DIY project.**
A: no, it will break.

## Customer Reviews

### ⭐⭐⭐⭐⭐ GREAT PRODUCT AT A GOOD PRICE
*by S***N on 9 December 2024*

NO RUST so far after 6 months. GOOD PRICE

### ⭐⭐⭐⭐ These are Iron rods Not ss rods
*by R***T on 15 October 2024*

Quiet value for money but are iron rods.

### ⭐⭐⭐⭐⭐ Nice Product
*by N***I on 18 November 2023*

Good smooth rod I bought all ready 4 rod before 3 year ago Packing is also good .nice product no doubt.

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- INVENTO 4pcs EN31 Rustproof Steel Smooth Rod 8mm OD 500mm (0.5 mtr) Long for CNC Robotics Machines DIY Projects
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**Shop now:** [https://www.desertcart.jp/products/126173206-4pcs-en31-rustproof-steel-smooth-rod-8mm-od-500mm-0](https://www.desertcart.jp/products/126173206-4pcs-en31-rustproof-steel-smooth-rod-8mm-od-500mm-0)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-13*