RAM Drill-Down Mount for the Garmin Rino 61 (RAM-B-138-GA47) (sku 54786)The RAM B 138 GA47 consists of a double socket arm, 2. 5" diameter round base with the universal AMPS hole pattern, diamond adapter base and custom high strength composite cradle for the Garmin Rino 600 series. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at the base and cradle. With a twist of the arm knob, you can move the flat surface Rino mount to your optimum viewing position. HARDWARE