The RAM-B-238U consists of a B size 1" diameter rubber ball on a 2.43" x 1.31" diamond plate. The plate has two holes 1.912" from center to center, matches the industry standard AMPS hole pattern and will connect to a large variety of RAM mounts and third party cradles.
Material: Powder Coated Marine Grade Aluminum
Ball Size: 1" Rubber Ball "B" Size
Note: The "U" in the part number reflects product packaged in poly bag.