Connects 30 amp RV power cords to a 30 amp 4-prong power source. Heavy-duty 10/4 STW cable for outdoor use. Connect between a power cord and a generator power source to resolve power incompatibility issues. Extra wide grip handles, LED indicator lights and outdoor use hard-service cable for quality and durability. Molded ends for watertight connection between cord and electrical contacts. Handle of female end for easy connection and removal from power cord.