Wide Compatibility: Phone holder car with adjustable arm design fit for all 4.0-7.1 inch with thickness = 14mm smartphones and other devices (width between 2.55-4.11 inches), such as GPS devices. A good assistant for drivers. Full Protection: Car phone mount features a unique hook design with a built-in stainless steel metal, wrapped in thick plastic on the outside, which will not leave any scratches while firmly locking the vent blades in place. The thick silicone rubber provides perfect protection which is never come off even when on bumpy roads. Note: Round vents are not compatible. High Flexibility: Cell phone holder car with flexible 360 ball joint and adjustable telescopic arm to adjust your phone to any ideal angle, which is more flexible and convenient than other mounts. The telescopic arm extends from 3.7" to 5.9" to adjust the distance between you and the car mount ensure driving stability and safety. Freely Mounting Options: Car phone holder with additional dashboard pad and air vent clips for free mounting on the windshield, dashboard, and air vents, which is never fall off in all road conditions. Suitable for all cars like pickup trucks, SUVs, trucks and taxis. NOTE: Not recommended to use the dashboard pad for windshield mounting. Military-Grade Suction: Cell phone holder car is equipped with super sticky suction and double lock design, which is made from heat resistant TPU material and will not come off the dashboard even in hot conditions and extreme weather. Simply rinse with water and let it dry naturally to restore sticky.