The RAP-B-166-2-AP10U consists of a double socket arm, suction cup twist lock base, diamond adapter base and custom high strength composite cradle for the Apple iPod touch 4th generation. The suction cup, twist lock base is designed to have a strong hold on glass and non-porous plastic surfaces, including RAM adhesive disks. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at the base and cradle. With a twist of the arm knob, you can move the iPod touch mount to your optimum viewing position.