Ball Mounting System w\/Universal Mounting PlateFeatures:The new Scotty Ball System with Universal Mounting Plate provides a mounting platform for a variety of accessoriesThe ball joint design of the Scotty 150 enables a smooth, full range of motionThe corrosion proof construction of this system provides a long service life in both fresh and salt water applicationsBase Mount Dimensions: 2-1\/4″ x  2-1\/4″Mount Height: Stands 6-3\/4″ tall