The (RAM-B-202U) RAM marine grade aluminum base contains a 1" diameter rubber ball connected to a flat 2.5" diameter base. This mount has pre-drilled holes, including the universal AMPS hole pattern.
Material:
Powder Coated Marine Grade Aluminum
Ball Size:
1" Rubber Ball "B" Size
Material:
Powder Coated Marine Grade Aluminum
Ball Size:
1" Rubber Ball "B" Size