Premium-quality DC ReceptacleThe patented Marinco; ConnectPro; Receptacle features unique locking blades with the industry's largest surface-area for maximum surface contact and electrical conductivity.ConnectPro; connections are weather resistant.The marine-grade design includes corrosion resistant, plated-brass electrical components, and a watertight sealing cap.The receptacle has Marinco's exlusive Perma-Lock™ terminals, meaning they virtually never need to be retichtenedAn O-ring seals out moisture while plugged into the receptacle.WARNING: This product can expose you to chemicals including Di-isodecyl Phthalate (DIDP) which is known to the State of California to cause reproductive harm. For more information go to P65Warnings.ca.gov.