---
product_id: 422502486
title: "MINIFOCUS 4\" Double Ball Aluminum Extension Arm, 1\" Ball Head Connector Underwater CNC Arm System Ball Head Extension for Strobe/Video Light/Diving Camera Tray, Waterproof and Rustproof (2pack)"
brand: "minifocus"
price: "8499 Ft"
currency: HUF
in_stock: false
url: https://www.desertcart.hu/products/422502486-minifocus-4-double-ball-aluminum-extension-arm-1-ball-head
store_origin: HU
region: Hungary
---

# Waterproof Universal Fit 4" Length MINIFOCUS 4" Double Ball Aluminum Extension Arm, 1" Ball Head Connector Underwater CNC Arm System Ball Head Extension for Strobe/Video Light/Diving Camera Tray, Waterproof and Rustproof (2pack)

**Brand:** minifocus
**Price:** 8499 Ft
**Availability:** ❌ Out of Stock

## Summary

> Dive into Creativity! 🌊

## Quick Answers

- **What is this?** MINIFOCUS 4" Double Ball Aluminum Extension Arm, 1" Ball Head Connector Underwater CNC Arm System Ball Head Extension for Strobe/Video Light/Diving Camera Tray, Waterproof and Rustproof (2pack) by minifocus
- **How much does it cost?** 8499 Ft with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/422502486-minifocus-4-double-ball-aluminum-extension-arm-1-ball-head)

## Best For

- minifocus enthusiasts

## Why This Product

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

## Key Features

- • **Enhanced Stability:** Equipped with silicone O-ring friction gaskets for a secure and stable connection.
- • **Lightweight Design:** Crafted from anodized CNC aluminum, this arm is both durable and easy to handle underwater.
- • **Corrosion Resistant:** Built to withstand the harshest underwater conditions without rusting or degrading.
- • **Free Angle Adjustment:** Easily adjust the angle of your strobe or video light for optimal lighting in every shot.
- • **Versatile Connectivity:** Compatible with all 1" ball head systems, making it the perfect addition to your underwater gear.

## Overview

The MINIFOCUS 4" Double Ball Aluminum Extension Arm is a robust and lightweight solution for underwater photography, featuring a corrosion-resistant design and universal compatibility with 1" ball head systems. This 2-pack includes free replacement O-rings, ensuring a stable connection for your strobe or video light, allowing for optimal angle adjustments to capture stunning underwater shots.

## Description

Full description not available

## Features

- Specification: Length: 4" /10.2 cm; Ball size: 1"/25 mm; Weight: 5 oz/141 g. 2x 4" double 1" ball extension arm; 2x free replacement O-rings
- High Quality Material: Made by corrosion resistant anodized CNC aluminum alloy, anti-corrosion; The hollow design makes it lighter and reduces resistance when used underwater
- Ball Head with Protection Ring: 1" ball head made by corrosion resistant anodized aluminum alloy with silicone O-ring friction gaskets, avoid friction during connection and make the connection more stable
- Free Extension: 4" double 1 inch ball arm supports to connect strobe or video light, freely adjust the angle to get the best lights angles to take the best photo you want
- Connector: Double ball adapter connect your underwater strobe or video light via the light holder; The size is universal and compatible for all arm systems that has a ball head which diameter is 25 mm/1 inch

## Product Details

- **Color:** 2PCS 4'' Double Ball Extension Arm
- **Brand:** MINIFOCUS
- **Item Weight:** 4.1 Ounces

## Images

![MINIFOCUS 4" Double Ball Aluminum Extension Arm, 1" Ball Head Connector Underwater CNC Arm System Ball Head Extension for Strobe/Video Light/Diving Camera Tray, Waterproof and Rustproof (2pack) - Image 1](https://m.media-amazon.com/images/I/615qPT7r8OL.jpg)
![MINIFOCUS 4" Double Ball Aluminum Extension Arm, 1" Ball Head Connector Underwater CNC Arm System Ball Head Extension for Strobe/Video Light/Diving Camera Tray, Waterproof and Rustproof (2pack) - Image 2](https://m.media-amazon.com/images/I/71wqQ5P-GWL.jpg)
![MINIFOCUS 4" Double Ball Aluminum Extension Arm, 1" Ball Head Connector Underwater CNC Arm System Ball Head Extension for Strobe/Video Light/Diving Camera Tray, Waterproof and Rustproof (2pack) - Image 3](https://m.media-amazon.com/images/I/71UREDhWf1L.jpg)
![MINIFOCUS 4" Double Ball Aluminum Extension Arm, 1" Ball Head Connector Underwater CNC Arm System Ball Head Extension for Strobe/Video Light/Diving Camera Tray, Waterproof and Rustproof (2pack) - Image 4](https://m.media-amazon.com/images/I/717Qo3k5V2L.jpg)
![MINIFOCUS 4" Double Ball Aluminum Extension Arm, 1" Ball Head Connector Underwater CNC Arm System Ball Head Extension for Strobe/Video Light/Diving Camera Tray, Waterproof and Rustproof (2pack) - Image 5](https://m.media-amazon.com/images/I/71DYO0TpaIL.jpg)

## Available Options

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

## Questions & Answers

**Q: These are suitable for Underwater/Marine use?**
A: These extension arms can be used under sea water. First of all, this product is underwater shooting supplies. Secondly, this ball extension arm is made of aluminum alloy, which has excellent corrosion resistance.

**Q: Will the small balls at the ends slip?**
A: Having never have slip while using them as long as you remembered to tighten the clamp. The friction from the silicone ring and the clamps, which can be adjusted to obtain by adjusting the clamp locking.

**Q: An extension arm has two length sizes, how should I choose?**
A: From this end of the ball to the other end of the ball is the overall length of the extension arm, but according to the actual size of the product that can be used, it should start from the red silicone O-ring.

## Frequently Bought Together

- MINIFOCUS 4" Double Ball Aluminum Extension Arm, 1" Ball Head Connector Underwater CNC Arm System Ball Head Extension for Strobe/Video Light/Diving Camera Tray, Waterproof and Rustproof (2pack)
- MINIFOCUS 4PCS 1'' Aluminum Ball Clamp Mount for Underwater Diving Light Arms Tray System, Photography Diving Camera, 360° Clip Adapter Bracket for Action Camera Flashlight Arms System
- 4Pcs Underwater Camera Buoyancy Float Kits, Buoyancy Provided 175g*4, Diameter 3.15", Thickness 1.5", Aquatic Arm Float Kit for Seafrogs/nitescuba/Starbea Floating Arms Diving Tray

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hu/products/422502486-minifocus-4-double-ball-aluminum-extension-arm-1-ball-head](https://www.desertcart.hu/products/422502486-minifocus-4-double-ball-aluminum-extension-arm-1-ball-head)

---

*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-09*