Marinco Shore Power EEL Y Adapters 50 Amp 125/250V Locking Dock Side/Male Plug, Two - 30 Amp 125V Locking with Sealing Collar System Boat Side/Female Connectors 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 Allows you to split one dock side receptacle between two boat inlets of similar or dissimilar power configurations UL approved