The RAM-E-202U is a 3.68 inch round marine grade aluminum universal base plate with a 3.38 inch diameter rubber ball. This universal plate has pre-drilled holes including two holes at 180 degrees and three holes at 120 degrees. The RAM-E-202U is also used to secure RAM arms (RAM-E-201 series).
NOTE: Mounting hardware not included.
The RAM-E-202U shown above.