Prime MARAD30Y Twist-To-Lock Marine"Y" Adapter, 30 Amp Plug & Two 30 Amp Connectors Spilt the feed from a 30 Amp power source to two 30 Amp inlets on the boat Twist-to-Lock marine grade connector with waterproof seal Flexible Cord Heavy duty, flame retardant and water resistant cable Oversized strain reliefs prevent wire separation