This convenient adapter allows quick thru-hull connections to an AC extension cord - with no cutting or splicing required - using the male AC plug from any of our chargers. The watertight cover and gasket prevent corrosion on the AC plug when it isn&';t in use.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.