The RAM Mount Diamond Base 2 7/16×1 5/16 & Ball consists of a B size 1″ diameter rubber ball on a 2.43″ x 1.31″ diamond plate.

The RAM Mount Diamond Base 2 7/16×1 5/16 & Ball 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.