RAM® U-Bolt Double Ball Mount with 1/4"-20 Threaded Stud - B Size Medium RAM-B149ZA-GA7U and one diamond ball base

and one diamond ball base (both bases feature the universal AMPS hole pattern)

double socket arm and universal X-Grip®clamping cradle for 7"-8" tablets

and memory card slot

The RAM-B-149Z-GA63U consists of a zinc coated u-bolt base

RAM® U-Bolt Double Ball Mount with 1/4"-20 Threaded Stud - B Size Medium RAM-B149ZA-GA7U and one diamond ball baseThe RAM B 149Z 237U consists of a zinc coated u bolt base, double socket arm and 1" diameter rubber ball, connected to a 1 4" 20 camera thread. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at both ends of the socket arm; this with a twist of the arm knob, allows for infinite articulation and optimum viewing angles. The male thread matches most standard camera and camcorder female threads found