---
product_id: 354057485
title: "sourcing map4mm to 4mm Bore Rigid Coupling Set Screw L20XD12 Aluminum Alloy,Shaft Coupler Connector for RC Airplane Boat, Motor Accessories,Red,2pcs"
brand: "sourcing map"
price: "€ 21.02"
currency: EUR
in_stock: true
reviews_count: 2
url: https://www.desertcart.hr/products/354057485-sourcing-map4mm-to-4mm-bore-rigid-coupling-set-screw-l20xd12
store_origin: HR
region: Croatia
---

# 4mm Connection Aluminum Alloy 20mm Length sourcing map4mm to 4mm Bore Rigid Coupling Set Screw L20XD12 Aluminum Alloy,Shaft Coupler Connector for RC Airplane Boat, Motor Accessories,Red,2pcs

**Brand:** sourcing map
**Price:** € 21.02
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Engineering Game!

## Quick Answers

- **What is this?** sourcing map4mm to 4mm Bore Rigid Coupling Set Screw L20XD12 Aluminum Alloy,Shaft Coupler Connector for RC Airplane Boat, Motor Accessories,Red,2pcs by sourcing map
- **How much does it cost?** € 21.02 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/354057485-sourcing-map4mm-to-4mm-bore-rigid-coupling-set-screw-l20xd12)

## Best For

- sourcing map enthusiasts

## Why This Product

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

## Key Features

- • **Durable Material:** Robust aluminum alloy ensures longevity.
- • **High Sensitivity:** Low inertia for responsive performance.
- • **User-Friendly Design:** Single piece set screw clamp for easy setup.
- • **Precision Engineering:** Crafted for optimal torque and rigidity.
- • **Versatile Applications:** Perfect for RC airplanes, boats, and DIY projects.

## Overview

The sourcing map 4mm to 4mm Bore Rigid Coupling Set is a high-performance connector designed for various applications, including RC vehicles and CNC machines. Made from durable aluminum alloy, this coupling features a precision-engineered design that ensures high torque and rigidity, making it ideal for holding components securely. With a user-friendly single piece set screw clamp, it allows for easy installation and adjustment, catering to both hobbyists and professionals alike.

## Description

sourcing map4mm to 4mm Bore Rigid Coupling Set Screw L20XD12 Aluminum Alloy,Shaft Coupler Connector for RC Airplane Boat, Motor Accessories,Red,2pcs

## Features

- Connection Diameter: 4mm to 4mm, Total Length: 20mm /0.78 inch, Outside Diameter : 12mm/ 0.47 inch
- Widely used in blowers,3D printer,DIY robots,CNC machine,stepper motors,etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.
- Top tight type rigid coupling with 2/4 screws to hold the shaft tightly; high torque with rigidity, low inertia and excellent sensitivity.
- NOTE: The rigid type basically does not allow eccentricity, and it must be fully adjusted during use.
- Single piece set screw clamp design makes it easy to set up the items on the shaft and control the holding capacity of the coupling.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | sourcing map |
| Part number | a18121800ux0721 |
| Item Weight | 10 g |
| Product Dimensions | 5 x 3 x 2.01 cm; 10 g |
| Manufacturer reference | a18121800ux0721 |
| Size | 4mm to 4mm |
| Colour | Red |
| Material | Aluminium |
| Batteries Required? | No |

## Images

![sourcing map4mm to 4mm Bore Rigid Coupling Set Screw L20XD12 Aluminum Alloy,Shaft Coupler Connector for RC Airplane Boat, Motor Accessories,Red,2pcs - Image 1](https://m.media-amazon.com/images/I/61Ux+6cH29L.jpg)
![sourcing map4mm to 4mm Bore Rigid Coupling Set Screw L20XD12 Aluminum Alloy,Shaft Coupler Connector for RC Airplane Boat, Motor Accessories,Red,2pcs - Image 2](https://m.media-amazon.com/images/I/61PRn03limL.jpg)
![sourcing map4mm to 4mm Bore Rigid Coupling Set Screw L20XD12 Aluminum Alloy,Shaft Coupler Connector for RC Airplane Boat, Motor Accessories,Red,2pcs - Image 3](https://m.media-amazon.com/images/I/61rW1kgd3sL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Excellent precision coupler
  

*by J***T on Reviewed in the United Kingdom on 17 May 2023*

Perfect!

### ⭐⭐⭐⭐⭐ 







  
    Cest beau
  
  

*by K***M on Reviewed in France on 29 November 2020*

Produit de bonne facture. Fonctionne bien avec un arbre de 6mm et différentielle 5mm.

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**Shop now:** [https://www.desertcart.hr/products/354057485-sourcing-map4mm-to-4mm-bore-rigid-coupling-set-screw-l20xd12](https://www.desertcart.hr/products/354057485-sourcing-map4mm-to-4mm-bore-rigid-coupling-set-screw-l20xd12)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-05*