【Lastest Designed Metal Hook】Adopted tough metal for the hook, ensuring that the car mount hook clip will not break. The outer surface is wrapped with a thick layer of silicone to perfectly protect the exhaust blades on vent. Also increase the contact area with the vent blade - Double protection to prevent the phone from dropping ! NOTE: The Length Of The hook clip is Adjustable by Turning The Adjustment Knob. 【Universal & Strong Suction Cup Holder】Holds all phone and case combinations from 2.3 inches to 3.5 inches in width, reusable suction cup combo provide a powerful hold and superior sticking strength. 【Humanized Design】When you need to clamp the phone, press the protective wings on both sides of the phone(Press to Clamp), when you need to release the phone, press the release button on the back to take out the phone. 【Great Compatibility】The upgraded vent hook is compatible with 99% of horizontal and vertical vents, the strong sution cup holder is suitable for car Dashboard/Windshield. Our car phone holders can switch horizontal and vertical angles at will, so that you can enjoy the best driving posture. Note: Round vents are not compatible.