Universal Sounder MountThe new Scotty Universal Sounder Mount uses a new multi pattern universal top plate and the patented Scotty post mount design for quick removal and infinitely adjustable rotation. Simply fasten your sounder bracket to the top plate, then lock down the sounder mount into your favorite Scotty mounting system. Locked, loaded and ready to start catching fish! WARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.