The RAM-B-149Z-GA39U consists of a zinc coated u-bolt base, double socket arm, diamond adapter base and high strength composite cradle for Garmin nuvi 3000 series GPS devices. The mount is designed with a RAM 1" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm this allowing for almost infinite adjustment and perfect viewing angles. Included in this package is hardware that will accommodate rails from 0.50" to 1.25" in diameter. Also included are black cover caps to be placed over the exposed ends of the u-bolt and a composite adapter that can narrow the rail to a minimum width of 0.5".