Never Fall Off-Metal Hook Design: car phone holder adopts simplified locking design. The steel metal hook(with silicone pad and mat) will catch one of car air vent blades and provide excellent strudiness. It will work well for your car even in extremely harsh environments. NOTE: ONLY Compatible with horizontal and vertical vents. Not suitable for round vents. Also can be used on bedstand and desk.Universal Compatibility: cell phone stand for car mount is compatible with the smartphones (4.0-7.2 inches) and thicker cases. Note!!The lengh of vent clip hook is MAX 1.4inch(3.6cm), it will be compatible with vent blades less than 1.4 inches (3.6 cm) wide. Not suitable for Round Vent. Also for bedstand & desk360-degree Flexible Rotation: The 360-degree rotatable design will provide you with the best viewing angle to keep secure driving. You can place your phone in any orientation (landscape, portrait and more), Just enjoy the best drving experienceProfessional Support: Please for any product issues, a satisfying solution is promised foreverOne-hand Operation: With quick release button, adjustable clamp arms and foot, car phone mount makes it very easy to insert and remove your phone with single hand. Provide you with safer driving whether you are talking, navigating or listening to music or charging.