Easy to
Install: The fork stem phone mount for motorcycle fits for mounting on 12 mm to 25.4 mm diameter fork stem tubes. The 1" ball metal mounting base can be mounted on the cylindrical or hexagonal bore wall of the motorcycle fork stems. The package comes with two metal expansion spacers, the small expansion spacer fits for 12 mm to 18.5 mm diameter fork stem tubes and the large expansion spacer fits for 18.5 mm to 25.4 mm diameter fork stem tubes. You can choose one size of spacer to install according to the tube diameter, and the metal fork stem base supports minimum tube depth of 38 mm
Wide Compatibility: By adjusting the screws at the bottom of the motorcycle fork stem phone holder, you can match different widths of cell phones. The motorcycle phone cradle is suitable for cell phones (Case Included) with length of 135 mm - 174.5 mm( 5.31" - 6.87" ), widths of 62 mm - 93 mm( 2.44" - 3.66" ), compatible up to a maximum thickness of 16 mm( 0.63" ), and compatible with phone screen diagonal size of 5.5" - 7.2"