This one goes on the backstay and scanner mounts rearward of backstay and accepts any small radar. Top connects to backstay and base goes on your stern. A rigid metal pole connects the two. Will fit most boats from 25 to 55 feet. Mounting plate is hydrallically damped. Best offer plus packing and shipping (which is going to be oversized due to length). Includes approx 8' pole and top end damped mounting plate. Is missing the plate that goes on stern, but this is easy to substituted since it requires only one bolt. Best offer