RAM 2.4375" Diameter Round Base with 2.25" Ball (Universal AMPs Hole Pattern)
The RAM-D-254U consists of a 2.25" diameter rubber ball, connected at right angles to a 2.4375" diameter round plate. The plate has pre-drilled holes in the base plate, including two holes at 180 degrees and three holes at 120 degrees.
Material: Powder Coated Marine Grade Aluminium
Ball: D size 2.25" rubber
The "U" in the part number reflects product packaged in poly bag.