RMX4600 RailMount uncut (usable surface = 11.375" W x 6.75" H) (28.9cm W x 17.1cm H) RailMount NavPods are most suitable for installing autopilots, navigation tools or small chartplotters to existing bases On the protective cover. Can be installed on any pipe with a diameter of 1" or 1.25". Chrome-plated stainless steel arms are used to install NavPod. NavPod can be rotated 180 degrees for easy viewing when sitting under the dodger on a rainy day. Full line