KEY FEATURES AMPS phone mount screws into walls and solid flat surfaces Solid construction provides strength and reliability Cell phone holder fits phones up to 4 inches wide Arkon’s RoadVise premium 4-Hole AMPS Wall or Car Mount fits phones with cases weighing up to 2 pounds and measuring up to 4” wide, thanks to the holder’s spring-loaded mechanism. It can take the following devices but not limited to: Apple iPhone 12/12 pro/12 Pro Max, iPhone 11/11 Pro/11 Pro Max Samsung Galaxy S21/S21+/S21 Ultra, Note 9, Galaxy S10/S9/S8 LG G6/G5/G4 Designed to use two hands to install and remove the device, it’s recommended that the RoadVise Holder is used with smartphones with skins and ruggedized cases. The holder is easy to install - just snap it onto the 17mm ball of the pedestal and use the included tightening ring to secure. The 4-Hole AMPS pattern consists of four holes located in a rectangular pattern spaced at 30.17mm x 38.05mm (measured as the center-to-center distance between holes). This tough, low-vibration pedestal measures 6.5 inches high and is made of a combination of plastic and glass fiber. The arm of the pedestal swivels on both the top and the bottom, providing 360-degree rotation and the ultimate flexibility in positioning the smartphone at any angle. (Warning: Drilling into the vehicle may cause damage. Use caution and consult a mobile install professional to avoid drilling into any sensitive vehicle components.)