7:4 multi ton adaptor. 7:4 4-wire flat to 4-wire flat and 7 RV round adaptor. Hoppy Multi-Tow adapters provide 2 towing options from 1 vehicle end connector creating a true customized Plug-in Simple wiring system. Connector Type: 4-Wire Flat, Adaptor Connector Type: 4-Wire Flat and 7-RV Round