---
product_id: 474213282
title: "– MGN12H Mini Linear Rail Guide, 300mm Linear Sliding Guide with MGN12H Carriage Block for DIY Printers and CNC Machines - Compatible with 250/300/400/500/550mm Sizes"
brand: "walfront"
price: "฿3204"
currency: THB
in_stock: true
reviews_count: 9
url: https://www.desertcart.co.th/products/474213282-mgn12h-mini-linear-rail-guide-300mm-linear-sliding-guide-mgn12h
store_origin: TH
region: Thailand
---

# 300mm precision length High-accuracy linear sliding Robust metal construction – MGN12H Mini Linear Rail Guide, 300mm Linear Sliding Guide with MGN12H Carriage Block for DIY Printers and CNC Machines - Compatible with 250/300/400/500/550mm Sizes

**Brand:** walfront
**Price:** ฿3204
**Availability:** ✅ In Stock

## Summary

> ⚙️ Slide into precision — upgrade your DIY game with seamless linear motion!

## Quick Answers

- **What is this?** – MGN12H Mini Linear Rail Guide, 300mm Linear Sliding Guide with MGN12H Carriage Block for DIY Printers and CNC Machines - Compatible with 250/300/400/500/550mm Sizes by walfront
- **How much does it cost?** ฿3204 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/474213282-mgn12h-mini-linear-rail-guide-300mm-linear-sliding-guide-mgn12h)

## Best For

- walfront enthusiasts

## Why This Product

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

## Key Features

- • **Precision in Motion:** Experience ultra-smooth linear sliding with high accuracy for flawless DIY printer and CNC builds.
- • **Compact & Lightweight:** Sleek 300mm size and just 248g—perfectly engineered for space-conscious, high-performance automation.
- • **Effortless Installation:** Designed for quick setup and fluid movement, so your projects stay on schedule and on point.
- • **Versatile Compatibility:** Seamlessly fits 250-550mm setups, making upgrades and customizations effortless.
- • **Industrial-Grade Durability:** Crafted from premium metal with ISO 1206 certification, built to withstand demanding semiconductor and medical equipment environments.

## Overview

The MGN12H Mini Linear Rail Guide is a 300mm metal linear sliding system designed for high-accuracy, smooth motion in DIY printers, CNC machines, and various automation equipment. Lightweight yet robust, it supports sizes from 250mm to 550mm and meets ISO 1206 standards, ensuring industrial-grade reliability and easy installation for professional-grade projects.

## Description

Full description not available

## Features

- Professional and technical rail and block, strong and to use
- Small size, light weight, suitable for most automatic equipment
- High accuracy and stable performance, can work fluently
- Slider could easily and lightly move for convenient use
- Suitable for Semiconductor manufacturing equipment, printed circuit board IC assembly equipment, medical equipment; machine arm, Accuracy measuring instruments, office automational equipment and other small linear sliding devices

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Walfront |
| Part Number | Walfrontigz932bmys-02 |
| Product Dimensions | 25 x 5 x 2 cm; 248 g |
| Item model number | 300mm |
| Size | 300mm |
| Finish | Finish |
| Material | Metal |
| Power Source | Unknow |
| Installation method | InstallationMethod |
| Item Package Quantity | 1 |
| Spout height | 1 Centimetres |
| Certification | ISO 1206 |
| Included Components | inc |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 248 g |

## Product Details

- **Brand:** Walfront
- **Material:** Metal
- **Item dimensions L x W x H:** 25 x 5 x 2 centimetres
- **Item weight:** 248 Grams
- **Bearing number:** 1

## Images

![– MGN12H Mini Linear Rail Guide, 300mm Linear Sliding Guide with MGN12H Carriage Block for DIY Printers and CNC Machines - Compatible with 250/300/400/500/550mm Sizes - Image 1](https://m.media-amazon.com/images/I/51bo+lFImQL.jpg)

## Available Options

This product comes in different **Size Name** options.

## Questions & Answers

**Q: How loud are the ball bearings when moving on the rail? Trying to make a jig for a camera.**
A: to be honest i couldn't promise this item would be suitable. Their quality is variable and can range from super smooth to a juddering mess.

If you are after a slide Ratrig make a very affordable one that might be more suitable....

**Q: Are these solid or hollow?**
A: The rail is solid

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good value linear rod kit and good quality
  

*by A***H on Reviewed in the United Kingdom on 11 August 2020*

I bought 2 of these 30cm long few days apart . One came with just 2 end stops ,the other with 4 (not sure why would you need 4 stoppers ) both had spaces in  between ball as it should ( one review stated had missing balls  , but clearly he doesn't understand mechanics) . Both are firm and one already been fitted and all good without any play

### ⭐ 1.0 out of 5 stars







  
  
    Extremely poor
  

*by A***A on Reviewed in the United Kingdom on 4 March 2020*

I bought two of these rails. Both were refunded because of the extremely poor quality.Balls were missing, the holes were misaligned and they weren't machined properly. Even when I managed to fix all of this, spending hours of my life on it, they were wobbly and loose. They didn't even have a grease nipple even though the plastic parts under the outer cover were made for it.I wouldn't use these rails if I had any choice in the matter.If you have them hanging on the side, like for an X axis rail or side mounted Y axis rails, you can make them work. But I used one for my Y axis for a while and my bed was so wobbly I had constant issues with it.I would go for an established brand, I'm not gonna name drop any here but there are plenty. They cost a little bit more but these rails are NOT worth it.

### ⭐⭐ 2.0 out of 5 stars







  
  
    Decent rails, awful shipping.
  

*by M***S on Reviewed in the United Kingdom on 8 January 2020*

The rails are fine but as there where no stops on the end of the rails the carriages spilled most of their ball bearings over the packaging.

## Frequently Bought Together

- MGN12H Mini Linear Rail, 250/300/ 400/500/ 550mm Linear Sliding Gide with MGN12H Carriage Block for DIY 3 Dimensional Printer and CNC Machine (300mm)
- FUSHIBEARING F695-2RS Bearing 5x13x4mm Flanged Miniature F695-RS Deep Groove Ball Bearings F695RS for VORON Mobius 2/3 3D Printer (Pick of 10Pcs)

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**Shop now:** [https://www.desertcart.co.th/products/474213282-mgn12h-mini-linear-rail-guide-300mm-linear-sliding-guide-mgn12h](https://www.desertcart.co.th/products/474213282-mgn12h-mini-linear-rail-guide-300mm-linear-sliding-guide-mgn12h)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-03*