Premium-quality DC Receptacle SHIPPING INCLUDED TO LOWER 48 STATE DESTINATIONS The 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-Lockā¢ terminals, meaning they virtually never need to be retichtened