This is a full set of parts necessary to mount any phone or small tablet to the DMM or DSM (not included).
Opens to 7" (not the same as a 7" screen... your device must be either 7" wide or tall to fit)
You will get:
1 x 1" ball with bolt, bushing and washer. 1 x Short double 1” socket arm. 1 x Phone/small Tab Holder with extra size adjustment legs.