RAM® Double Socket Arm - D Size Medium RAM-B-367U With the included short single

With the included short single socket arm

The rectangle base contains different combinations of pre-drilled holes which will match up to many electronic devices and mounts

double socket arm

double socket arm and connecting Humminbird/Apelco marine adapter base

5" diameter double sided adhesive pad and a U-Bolt base with 1" diamter B-size ball

RAM® Double Socket Arm - D Size Medium RAM-B-367U With the included short singleThe RAM D 201U, standard size double socket arm, 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.