The RAP-B-166-2-SP1U consists of a twist lock suction cup base, double socket arm, diamond adapter and cradle for the Classic Electronic E6B™. 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 Classic Electronic E6B™ cradle to your optimum viewing position.