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. More information: Features | Product colour | Black |  | Compatibility | Garmin zumo 400, 450, 500, 550, 660, TomTom Rider 2, Urban Rider | Weight & dimensions | Weight | 45.35 g |
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