The (RAM-240U), marine grade aluminum base, consists of a 1.5" diameter rubber ball connected to a flat 3.68" diameter base. This base has pre-drilled holes that connects to RAM Tough-Dock Powered Docking Stations.
Material: Powder Coated Marine Grade Aluminum
Ball Size: 1.5" Rubber Ball Size
Note: The "U" in the part number reflects product packaged in poly bag. Manufacturer : RAM Mounting Systems Manufacturer Part No : RAM-240U UPC : 793442002403