Wiring Device-Kellems Twist-Lock® Insulgrip® Locking Connector, Grounding Heavy Duty Cord Mount, 125/250 VAC, 50 A, 3 Pole, 4 Wires, Industrial Grade, IP20 Enclosure, 3/4 to 1-1/8 in Diameter Cord, -40 to 75 deg C, Pressure Screw Terminal, Nylon, Black/White, 6.5 x 2.56 x 2.5 in