---
product_id: 545897025
title: "2pcs EN31 Stainless Steel Smooth Bar 8mm OD 400mm (0.4mtr) Long for CNC Robotic Machines DIY Projects"
brand: "invento"
price: "$36.38"
currency: USD
in_stock: true
reviews_count: 5
url: https://www.desertcart.us/products/545897025-2pcs-en31-stainless-steel-smooth-bar-8mm-od-400mm-0
store_origin: US
region: United States of America
---

# Precise 8mm OD for exact fits 400mm length ideal for versatile CNC & robotics EN31 Hard Chromed Rustproof Steel 2pcs EN31 Stainless Steel Smooth Bar 8mm OD 400mm (0.4mtr) Long for CNC Robotic Machines DIY Projects

**Brand:** invento
**Price:** $36.38
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your DIY game with precision steel rods that never quit!

## Quick Answers

- **What is this?** 2pcs EN31 Stainless Steel Smooth Bar 8mm OD 400mm (0.4mtr) Long for CNC Robotic Machines DIY Projects by invento
- **How much does it cost?** $36.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/545897025-2pcs-en31-stainless-steel-smooth-bar-8mm-od-400mm-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

- • **Built to Last:** EN31 hard chromed steel resists rust and wear, guaranteeing durability in demanding DIY projects.
- • **Dual Power Pack:** Two smooth rods included, doubling your build potential and minimizing downtime.
- • **Precision Perfect:** Engineered 8mm diameter ensures seamless integration in high-accuracy CNC and robotics setups.
- • **Lightweight Strength:** At just 500g total, these rods deliver robust performance without adding bulk.
- • **Versatile Compatibility:** Optimized length of 400mm fits a wide range of 3D printers, CNC machines, and robotics applications.

## Overview

INVENTO’s 2-pack of 400mm EN31 hard chromed smooth rods offers rustproof, high-strength steel with an 8mm outer diameter, perfect for CNC, 3D printing, and robotics projects requiring precision and durability.

## Description

Package Include 2 x 400mm long Smooth Rods

## 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 |
| Date First Available | 22 April 2023 |
| Is Discontinued By Manufacturer | No |
| Item Model Number | ISC 1483 |
| Manufacturer | INVENTO |
| Product Dimensions | 40 x 0.8 x 0.8 cm; 500 g |

## Product Details

- **Brand:** INVENTO
- **Colour:** Grey
- **Item dimensions L x W x H:** 40 x 0.8 x 0.8 centimeters
- **Material:** Alloy Steel
- **Shape:** Round

## Images

![2pcs EN31 Stainless Steel Smooth Bar 8mm OD 400mm (0.4mtr) Long for CNC Robotic Machines DIY Projects - Image 1](https://m.media-amazon.com/images/I/41g5ZIMzgoL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality
*by  on Reviewed in India 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.

### ⭐⭐⭐⭐⭐ Finishing and quality
*by  on Reviewed in India 26 April 2026*

Good finishing and quality

### ⭐⭐⭐⭐ Good product
*by  on Reviewed in India 16 November 2021*

Value for money

## Frequently Bought Together

- INVENTO 2pcs EN31 Rustproof Steel Smooth Rod 8mm OD 400mm (0.4 mtr) Long for CNC Robotics Machines DIY Projects
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**Shop now:** [https://www.desertcart.us/products/545897025-2pcs-en31-stainless-steel-smooth-bar-8mm-od-400mm-0](https://www.desertcart.us/products/545897025-2pcs-en31-stainless-steel-smooth-bar-8mm-od-400mm-0)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-31*