Ram Mount 2.5 x 1 5/16-Inch Base with Ball, Black
The RAP-B-238U consists of a 1" diameter rubber ball connected at right angles to a 2.43" x 1.31" diamond base. The base 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 Mount and third party cradles.