Conntek 14435 RV Power Cord, RV 30-Amp to 50 Amp Locking (25 Feet) Plug (Male): NEMA TT-30P (RV 30 Amps, 125 Volts) Receptacle (Female): NEMA SS2-50R, 50-Amps, 125/250-Volts, Locking Style