RAM Mounts  RAM 1.5" X 3" Rectangle Base with 1.5" Ball for Helix 5

The RAM-202U-153 consists of a 1.5" diameter rubber ball connected at right angles to a 1.5" x 3" rectangular base. This mount has pre-drilled holes at each corner of the base plate and fits the Humminbird Helix 5 Series fish finder.