163 1.5″ Ball Mount with Fishfinder & Universal Mounting PlateThe latest edition to Scotty’s ball mounting system is the 1.5 ball mount.Features:The bigger ball design gives you a much greater clamping force for larger accessories while still having a smooth full range of motionThe 163 top plate has been designed to accept large fish findersDimensions:Base Mount Dimensions: 2 x 2 Mount Height Stands: 6.5 Tall