"The Fishing Specialties Low Water Resistance Mounting System for Transducer delivers complete downrod mounting for your LVS34 transducer (not included). This setup includes the downrod end and the mounting pin and ball set. The disk end fits 1.5"" OD downrods, and the ball gimbal bracket sets up for all views Forward, Down and Perspective. This transducer mount assembly from Fishing Specialties presents less water resistance than most standard brackets and thus the downrods are more stable when you're on the move. Weight: 1 lb. Complete downrod mounting for your LVS34 transducer (not included) Ball gimbal bracket sets up for all views Disk end fits 1.5"" OD downrods Assembly presents less water resistance"