This NEMA 5-15P power plug by Cooper(R) is made of robust and durable nylon. This two-pole, three-wire plug features two parallel flat blades and one grounding pin. The solid brass blades are firmly embedded in the plug body. The durable construction of this product resists chemical attack and is less brittle in extremely low temperatures. The wiring chambers are euqipped with captive triple-drive screws, which eases wire connection, the cord grip inserts are removable.