Conntek 14381, 30 Amp RV Plug Pigtail Adapter to 50 Amp Locking Connector Plug (Male): NEMA TT-30P (RV 30 Amps, 125 Volts) Receptacle (Female): NEMA SS2-50R, 50-Amps, 125/250-Volts, Locking Style Maximum Wattage: 3,750 Watts Safely converts standard RV outlet to a 50 Amp Locking inlet Unique elbow style plug offers additional strain-relief