Features: Enhances your mounting setup with this 17mm to 17mm double ball head adapter featuring a flexible aluminum , designed for seamless integration with industry standard double ball socket arms in car mounts, bike phone holders, and navigation systems. Crafted from plastic and light weight aluminum alloy, this 360 rotatable adapter offer four adjustable lengths (22cm/32cm/42cm/52cm) and angles customization for stable device positioning during dynamic movements. Ideal for cyclists, motorcyclists, and live stream creators requiring versatile mounting solution, it ensures secure attachment for smartphones, tablets, and cameras during outdoor adventures or mobile broadcasting. Optimize viewing angles while navigating city streets, recording action footage, or conducting live streaming – its bendable structure maintains firm grips even on bumpy roads or vibrating vehicle surfaces. As a must have extension accessory for map holders, bicycles phone mounts, and car dashboard支架, this adapter delivers multiple device support across commuting, travel vloggings, and handfree navigation scenarios. Specifications: Component: Plastic + Aluminum Alloy Length: 22cm/8.66'',32cm/12.6'',42cm/16.54'',52cm/20.47'' Ball head diameter: 17mm Package Includes: 1Piece 17mm to 17mm Extension Rod note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.