The RAM-B-202U consists of a B Size 1" diameter rubber ball connected to a flat 2.5" diameter plate. This mount has pre-drilled holes, including the universal AMPs hole pattern.
Ball Size:

• B Size 1" Rubber Ball

Note:
The "U" in the part number reflects product packaged in poly bag. The RAM-B-202U will attach to any RAM composite cradle; however, the RAM-B-238U is most commonly used.