The RAM-D-115BU, universal mounting plate, consists of a 2.25" diameter rubber ball, connected at right angles to a flat 6.25" x 2" rectangular plate. The plate contains different combinations of pre-drilled holes which will match up to many electronic devices. *Note: This plate is a universal mounting bracket with a selection of mounting hole locations. In certain applications additional holes may need to be drilled for proper fit with your electronic device.