NMEA 2000 Through Bulkhead AdaptorUse for transitions through bulk heads or panels. Simplifies installation when routing through a waterproof bulkhead or panel. Creates a connection point for removable equipment such as a computer interface.WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.