Cable Grommet Use Garmin's cable grommets to cover installation holes that have been drilled into your boat. Compatible Devices: * GDL 30/30A * GMR™ Series * GPSMAP® Series * GSD™ Series Warning [https://productimageserver.com/prop65/6pt.png]WARNING: 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 [http://P65Warnings.ca.gov].