RAM 2" x 1.7" Base with 1" Ball that Contains the Universal AMPs Hole Pattern for the Garmin zumo, TomTom Rider & Urban Rider
The RAM-B-347U base consists of a 1" diameter rubber ball connected at right angles to a 2" x 1.7" square base. The base has four pre-drilled holes at each corner, making the universal 1.5 x 1.188 (hole spacing) AMPS hole pattern.