This NEMA 6-20P power plug by Cooper(R) is made of thermoplastic vinyl. This two-pole, three-wire plug features two perpendicular flat blades and one grounding pin. The solid brass blades are firmly embedded in the plug body. The durable vinyl construction of this product resists chemical attack and is less brittle in extremely low temperatures. The terminal screw clamps are backed out, ready for wiring and individually built to insulate conductors.