Features: Enhances your mounting setups with this 17mm to 17mm Composite Ball Adapter, designs for simple integration with industry Standards Double ball socket mounting arms. Crafted from composite material, this adapter ensures long service performances and universal compatibilities with all 17mm mounting systems. Ideal for cyclists, motorcyclists, and enthusiasts, this adapter is perfect for those who require flexible device positioning on the go. Whether you're navigating city street or capturing live stream , its 360 degree rotation capability allows you to adjust your devices effortlessly for best viewing angles. This versatile extension is a must get accessory for anyone using Map brackets, bike phone holders, or motorcycle navigation mounts, providing reliable support and adaptability. Specifications: Material: plastic Length: about 165mm/6.5inch Ball head diameter: about 1.7cm/0.7inch Package Includes: 1x17mm Ball Adapter note: Please allow 1 to 3cm error due to manual measurement, please make sure you not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.