Features: Enhances your car vent phone mount setups with this 360 degree rotating aluminum extension arm featuring 17mm ball joint, offering various positioning for dashboard suction cup holders. The ball adapter and flexible metal plastic arm enable precise angle adjustments while maintaining ventilation access, ensuring seamlessly integration with 17mm ball accessories. Ideal for driver, live streamers, and office professional seek adjustable solution for smartphones (6-9cm width), tablets, or navigation devices across multiple mounting systems. Perfect for requiring handfree navigation, content creation setups needing optimally camera angle, or workspaces organization with secure device positioning on dashboards or tripods. Combining ruggedly aluminum construction with flexible positioning, this extension arm delivers stable support for car vent phone mounts, adapting effortlessly to dynamic environment. Specifications: Component:Plastic+Metal Length:Approx.30cm/11.81inch Length:Approx.20cm/7.87inch Mobile phone clip: 6cm-9cm width Color:Black Package Includes: 1 Set Car Vent Mount Adapter 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.