These are suitable for Underwater/Marine use?

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.

Will the small balls at the ends slip?

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.

An extension arm has two length sizes, how should I choose?

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.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Double Ball Aluminum Extension Arm

Product ID: 458285846

🌊Corrosion-resistant anodized CNC aluminum

🔄360° adjustable ball head connector

⚙️5" double 1" ball extension arms

NZ$97

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌟 Elevate your underwater lighting game with precision and style!

LIGHTWEIGHT YET ROBUST - Hollow design reduces weight to just 4.45 oz, minimizing drag and maximizing underwater maneuverability.
UNIVERSAL COMPATIBILITY - Fits all 1" ball head arm systems, seamlessly integrating with your existing underwater rig.
EFFORTLESS ANGLE MASTERY - Double 1" ball heads with silicone O-ring gaskets ensure smooth, stable 360° adjustments for perfect lighting.
COMPLETE READY TO DIVE KIT - Includes 2 extension arms plus free replacement O-rings—stay prepared and never miss the shot.
PRECISION ENGINEERED DURABILITY - Crafted from corrosion-resistant anodized CNC aluminum for unbeatable underwater longevity.

The MINIFOCUS 5" Double Ball Aluminum Extension Arm set features two corrosion-resistant anodized CNC aluminum arms with 1" ball heads, designed for underwater use. Lightweight and durable, these arms offer 360° adjustable angles with silicone O-ring gaskets for stable connections. Compatible with all 1" ball head systems, this 2-pack includes free replacement O-rings, making it an essential upgrade for professional underwater photographers and videographers.

Specifications

ASIN	B09PR8DZDP
Best Sellers Rank	#2 in Underwater Lighting Parts & Accessories
Brand	MINIFOCUS
Built-In Media	2 x 1 inch ball arm
Color	2PCS 5'' Double Ball Extension Arm
Compatible Devices	All arm systems that has a ball head which diameter is 25mm/1 inch
Customer Reviews	4.8 out of 5 stars 107 Reviews
Item Dimensions D x W x H	11"D x 1"W x 6"H
Item Height	6 inches
Item Weight	4.45 Ounces
Manufacturer	MINIFOCUS
Product Dimensions	11"D x 1"W x 6"H
Warranty Description	90days

Reviews

D**Z

High Quality

High quality product.

30.08.2025

M**R

Well made, fair price

I liked the fact that this was well made, and the price was as good as I’ve found. No dislikes.

21.09.2024

A**R

Buen servicio

Buena calidad y servicio.

25.10.2025

L**R

Minifocus

Just as described

22.09.2025

D**Z

Perfect

Excellent quality and exactly what I needed to draw my light a little closer in. The items arrived in a neatly packages box and were in perfect condition. The quality seems very good, although I have not had then in the water yet. I would definitely buy this product again!

9.04.2025

F**O

Brazo de extensión de aluminio

Los brazos de extensión de aluminio se ven fuertes, los he probado con las abrazaderas y funcionan bien. El O-ring rojo del brazo de extensión no parece que va aguantar mucho tiempo, no es de un buen material.

21.09.2025

T**T

Nice budget arms

I've been diving with these on my compact camera rig for several months and they seem to work just as well as the pricy Ultralight arms I have on my mirrorless rig.

2.02.2024

S**.

Great addition to my underwater camera system

Fabulous arms

29.11.2024

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Good experience, but the tracking updates could be better.

2 months ago

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The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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