The Precision Sonar Poor Man's Stack Mount gives you the ability to stack units on the bow or console of your boat. The factory gimbal brackets will mount together using the included hardware. If you are using two different sonar units, or Garmin units, you may end up having to drill your own couple holes to get the two factory brackets to line up together. FeaturesStack two mounts on your bow or consoleHardware includedFactory gimbal mounts to hardware