Features: Enhances your car phone mount's flexibility with this 17mm ball head extension arm, featuring a 20cm rod for adjustable length and 360 degree rotation to optimize viewing angles during drives. The double ball head design combines a 17mm female to female adapter with a bent male to male connector, offering bendable positioning and universally compatibility with most 17mm phone holders. Ideal for driver needing extended navigation visibility, live streamers requiring adjustable device angles, and office workers organizing multi device setups. Securely extend dashboard mounted phone holders for road trips, adjust tablet heights for video recording, or reposition monitors in compact workspaces effortlessly. Crafted from plastic, this 2 in 1 adapter ensures stable support for devices up to 10" while maintaining compatibility with standard 17mm car mounts and phone holders. Specifications: Component: Plastic + Metal Color: Black Size: Rod length 20cm Ball head diameter: 17mm Package Includes: 1 Set 17mm Double Ball Head Extension Arm note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.