Epicord EXRV30M50T RV Adapter Cord Twist Lock 30M/50T, 30A/125/250V, Max Load 3750W, NEMA tt-30p to SS2-50R, STW 10/3 100% Copper wire for reliable conduction and durable, heavy-duty polyvinyl plastic Easy to connect Locking system, Water-Resistant connection with boot and threaded ring, supply flexibility, designed connectors for easy grip For use when RV is equipped with 50 amp twist lock power inlet and needs to plug into 30 amp power source; do not exceed the rated current and rated voltage 2-Year guarantee against workmanship and defects, UV stabilized, tell approved