High strength composite construction to hold the Apple iPhone without case skin or sleeve. Without mount ball. Comes with the industry standard 1.912" (48.6mm) center to center AMPS hole pattern on the back. For use all AMPS hole pattern mounts like RAMs 944231 Diamond Mount Base with 1" (25.4mm) ball which allows this holder to be used with all RAMs socket arms and mount bases with 1" balls. Holds max. 2 lbs / 907 gram normal use or 1 lbs (454 gram) heavy duty use. - Includes two nuts & bolts for installation - Buttons cameras ports and speakers remain exposed and accessible - Order 944231 RAMs Diamond mount base with 1" connecting ball separately. Required for this cradle to be used with any of RAMs socket arms and mount bases with 1" balls.