Shadow DriveThe GHP™ 10's patented Shadow Drive technology gives boaters the security of knowing they maintain control even when relying upon the autopilot. Use this Shadow Drive attachment to automatically disengage the autopilot if the helm is turned, allowing the helmsman to maneuver the boat.Compatible Devices:GHP™ 10 Marine Autopilot SystemGHP™ 12 Autopilot SystemGHP™ 20 for Hydraulic Steering CorepackGHP™ 20 Marine Autopilot System with SmartPumpWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.