The RAM Zinc coated U-Bolt Rail Base consists of the 1" dia. ball and socket system with RAM Composite Cradle for the Garmin GPSMAP 176, 176C, 196, 276C and 296. The Rail Base has a 1.0" diameter Rubber Ball designed to sit at right angles to the mounting rail. The Zinc Coated metal U-Bolt and nuts included will fit a circular rail with diameter from 1/2" to 1.0".
