Clamp-On Ski Mirror. Universal mount fts up to 1/2" thick window frames and adjusts easily to meet most boat applications. Curved mirror provides a wide feld of view. Soft touch mounting clamps protect windows and frames. Zinc plated hardware and powder coated shaft assemblyWARNING: 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.