#a black no ground contact

ENERLITES 50 Amp Receptacle Outlet, NEMA 10-50R, Residential Commercial Industrial Grade, Outdoor/Indoor, 3-Pole, 3 Wire, No Ground Contact, AWG, UL Listed, 125/250V, 67500-BK, Black

ENERLITES 30 Amp Dryer Receptacle Outlet for Electric Dryers, NEMA 10-30R, Residential Commercial Industrial Grade, Outdoor/Indoor, 3-Pole, 3 Wire, No Ground Contact, AWG, UL Listed