Sturdy and Secure: The main body of this phone mount is made of PA66+GF30% high-strength composite materials, providing durability and reliability in the most demanding environments. Built-in high-quality industrial springs and a special eight-claw wrapping phone design ensure that your phone is securely fixed on the phone cradle even when driving on bumpy roads. The all-around rubber pads on cell phone mount protect your phone from scratching and slipping 1'' Ball Phone Holder: The cell phone holder with 1'' ball joint, compatible with RAM Mounts & BRCOVAN B size 1 inch ball double socket arm Anti-Shock, Protect Mobile Phone Camera: The cell phone holder is designed with a vibration dampener to minimize the vibration transmitted to the mobile phone while riding. The mobile phone holder also built-in with soft silicone that keep your phone from scratches and vibration. The phone cradle & phone camera features a non-contact designed to keep the phone camera from being squeezed and scratched while driving Anti Shake, Protect Your Phone: The special structure of this motorcycle phone mount can tightly wrap your smartphone. Designed with High-Speed Secure Knob: After putting your phone in, tighten the knob on the back of this motorcycle phone mount, make sure your mobile phone is securely attached to the motorcycle phone holder even when riding at high speed on bumpy roads Adjustable Design, Wide Compatibility: Adjustable length and width design can accommodate mobile phones of more sizes. The Phone Mount Holds Phones (Case Included) Dimensions: Length 5.03'' (128mm) - 7.59'' (193mm), Width 2.48'' (63mm) - 3.46'' (88mm), Thickness 0.787'' (20mm ) Max. Compatible with phone screen diagonal size 5.4''-7.2'' The phone cradle is designed with a vibration dampener to minimize the vibration transmitted to the mobile phone while riding. Adjustable length and width design can accommodate mobile phones of more sizes. The Phone Mount Holds Phones (Case Included) Dimensions: Length 5.03'' (128mm) - 7.59'' (193mm), Width 2.48'' (63mm) - 3.46'' (88mm), Thickness 0.787'' (20mm ) Max. Compatible with phone screen diagonal size 5.4''-7.2''. With 1'' ball joint, compatible with RAM Mounts B size 1'' ball double socket arm. Designed with High-Speed Secure Knob: After putting your phone in, tighten the knob on the back of this motorcycle phone mount, make sure your mobile phone is securely attached to the motorcycle phone holder even when riding at high speed on bumpy roads.