Feature: 250 Volt, 2-Pole, 3-Wire, 50 Amp Nema 6-50 outlet with square wall plate. It fits in 2-Gang box styles. It fits all wall plates with a 2.15" diameter center hole Great Material: Impact-resistant themoplastic and nylon materials for long service life. Heavy galvanized steel and mounting strap to resist corrosion. High quality, industrial grade Easy Installation: Flush mounting 6-50r receptacle, fast wiring, accept #8 - #4 AWG Wide Range Application: Ideal for any high amperage residential and industrial power connectivity application, EV, plasma cutter and welder receptacle Safe: Designed and tested in accordance with UL requirement