RAM Mount Double Socket Arm f/Garmin Fixed Mount GPS - 1.5" [RAM-101-G2U]Double Socket Arm with Two 2. 5 Inch Round Bases The RAM 101 G2U consists of a double socket arm and two 2. 5" diameter round bases with the universal AMPS hole pattern. Designed into the mount is a 1. 5" diameter patented rubber ball and socket system with adjustment points at both ends of the double socket arm. With a twist of the arm knob, you can move the RAM 101 G2U mount to your optimum viewing position. This mount is designed to hold the