Marinco EEL Pigtail Adapters 30A 125V locking dock side male plug to 15A 125V straight blade boat side female connector Fully molded and equipped with the Marinco unique sealing collar and covers for use in wet locations The EEL (Easily Engaged Lock) is a patented, industry first, jaw-clamp design providing one-handed operation and a secure waterproof seal which completely eliminates the need for a locking ring The EEL connection is built for the harshest environments and is UL approved