The RAM-B-202CHU Round Chrome base/adapter, consists of a 1″ diameter rubber ball connected to a flat 2.5″ diameter base. This mount has pre-drilled holes, including the universal Industry Standard AMPS 4 bolt hole pattern.
Material: Chromed Marine Grade Aluminum
Ball Size: 1″ Rubber Ball “B” Size
Note: The RAM-B-202CHU will attach to any RAM composite cradle, however, the slimmer RAM-B-238CHU two hole adapter is most commonly used. Use the Round Adapter/Base where 4 hole mounting or the larger “footprint” of this adapter are desired.