---
product_id: 128018107
title: "INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects"
brand: "invento"
price: "€ 25.92"
currency: EUR
in_stock: true
reviews_count: 8
category: "Invento"
url: https://www.desertcart.hr/products/128018107-invento-2pcs-en31-rustproof-steel-smooth-rod-8mm-od-400mm
store_origin: HR
region: Croatia
---

# 8mm OD precision 400mm length ideal for CNC EN31 hard chromed steel INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects

**Brand:** invento
**Price:** € 25.92
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your build with precision steel rods that mean business!

## Quick Answers

- **What is this?** INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects by invento
- **How much does it cost?** € 25.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/128018107-invento-2pcs-en31-rustproof-steel-smooth-rod-8mm-od-400mm)

## 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

- • **Trusted by Makers:** Highly rated with 4.2 stars and a top 105 rank in robotic accessories—join the community of innovators who rely on INVENTO.
- • **Precision Perfected:** Engineered with an exact 8mm outside diameter for flawless alignment in your CNC and robotics builds.
- • **Rock-Solid Durability:** Crafted from EN31 hard chromed steel to resist rust and wear, ensuring longevity in demanding projects.
- • **Optimal Length for Versatility:** At 400mm, these rods fit perfectly into a wide range of 3D printers, CNC machines, and DIY robotics setups.
- • **Pack of Two for Double the Impact:** Get two rods per pack, giving you the flexibility to tackle multiple projects or build with confidence.

## Overview

INVENTO’s 2-pack of 8mm OD, 400mm long EN31 hard chromed steel rods deliver rustproof, precision-engineered components ideal for CNC, 3D printing, and robotics projects. Trusted by makers for durability and exact specifications, these rods ensure smooth, reliable motion and long-lasting performance.

## Description

Outside Diameter: 8mm Length: 400 mm (0.4 meter) Material: EN-31 (Hard Chromed) Qty: 2pcs Application: 3D Printer, CNC, Robotics, DIY Projects etc

Review: Finishing and quality - Good finishing and quality
Review: Quality - Recently I ordered these 8mmOD 400mm long smooth rods 6 pieces for my CoreXY build and I got all 6 rods in excellent condition, all straight and no rust. Definitely go for them.

## Features

- Outside Diameter: 8mm
- Length: 400 mm (0.4 meter)
- Material: EN-31 (Hard Chromed)
- Qty: 2pcs
- Application: 3D Printer, CNC, Robotics, DIY Projects etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07RR14N72 |
| Best Sellers Rank | #14,075 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #461 in Robotic Kits & Accessories |
| Brand | INVENTO |
| Brand Name | INVENTO |
| Country of Origin | India |
| Customer Reviews | 4.3 out of 5 stars 101 Reviews |
| Importer Contact Information | INVENTO |
| Item Diameter | 8 Millimetres |
| Item Dimensions | 40 x 0.8 x 0.8 Centimeters |
| Item Form | Rod |
| Item Shape | Cylindrical |
| Item Thickness | 8 Millimetres |
| Item Type Name | INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects |
| Item Weight | 500 Grams |
| Item dimensions L x W x H | 40 x 0.8 x 0.8 Centimeters |
| Manufacturer | INVENTO, INVENTO SALES CORPORATION |
| Manufacturer Contact Information | INVENTO SALES CORPORATION |
| Model Number | ISC 1483 |
| Number of Items | 2 |
| Packer Contact Information | INVENTO |
| Part Number | ISC 1483 |
| Shape | Cylindrical |
| Unit Count | 2 Count |

## Product Details

- **Brand:** INVENTO
- **Item Diameter:** 8 Millimetres
- **Item Thickness:** 8 Millimetres
- **Item dimensions L x W x H:** 40 x 0.8 x 0.8 Centimeters
- **Shape:** Cylindrical

## Images

![INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects - Image 1](https://m.media-amazon.com/images/I/41g5ZIMzgoL.jpg)
![INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects - Image 2](https://m.media-amazon.com/images/I/61AATfaQYRL.jpg)
![INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects - Image 3](https://m.media-amazon.com/images/I/51GOUurGtUL.jpg)
![INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects - Image 4](https://m.media-amazon.com/images/I/31KRI9Nn2AL.jpg)

## Questions & Answers

**Q: is it stainless steel**
A: Invento EN31 steel rod is not Stainless Steel. 
Normal Carbon Steel is an alloy of Iron and Carbon. Stainless Steel should contain at least 10.5% Chromium and less than 1.2% Carbon. 
EN31 steel contains 1.4% Chromium, 0.5% Manganese, 0.2% Silicon and 1% Carbon. 
Invento EN31 steel rod is 'hard chrome plated' and used in industrial applications for its hardenability, wear resistance and corrosion resistance. 
For normal applications EN31 steel rod is rustproof and abrasion resistant.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Finishing and quality
*by J***R on 26 April 2026*

Good finishing and quality

### ⭐⭐⭐⭐⭐ Quality
*by S***M on 19 March 2026*

Recently I ordered these 8mmOD 400mm long smooth rods 6 pieces for my CoreXY build and I got all 6 rods in excellent condition, all straight and no rust. Definitely go for them.

### ⭐⭐⭐⭐ Good product
*by N***J on 16 November 2021*

Value for money

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-18*