Feature250 Volt, 2 Pole, 3 Wire, 50 Amp Surface mount Nema 6-50 outlet. MaterialImpact-resistant themoplastic cover for long service life. Heavy galvanized steel and mounting strap to resist corrosion. High quality, industrial grade. Easy InstallationSurface mount 6-50r receptacle with knockouts on the back and bottom, allowing wiring, accept up to #4 AWG. ApplicationIdeal for any high amperage residential and industrial power connectivity application, EV, plasma cutter and welder receptacle. UL listedDesigned and tested in accordance with UL requirement.