RAM® Double Socket Arm with Jam Nut - D Size Medium RAM-B-103-A-238 The diamond base adapter contains

The diamond base adapter contains the industry standard universal 2-Hole AMPS hole pattern

you can move the yoke clamp mount to your optimum viewing position

and a RAM® Twist-Lock™ suction cup

The included hardware is compatible with Garmin GPSMAP 172-250 devices

RAM® Double Socket Arm with Jam Nut - D Size Medium RAM-B-103-A-238 The diamond base adapter containsThe RAM D 201U MI1, standard size double socket arm with jam nut, has a socket at both ends that accommodates 2. 25" ball bases. A single spring inside the arm opens the end sockets, allowing you to pivot the ball and socket connection. This socket technology allows for almost infinite adjustment and perfect viewing angles.