Leviton's Black White 50 Amp Non-NEMA line of industrial grade locking blade plug feature rugged construction that resists impact, sunlight, chemicals and rough use. Corrosion resistant versions feature nickel plated contacts and blades, plus stainless steel shrouds and screws. The ergonomic, fluted-body design with radial gripping edge is ideal for gripping and pulling. The unique cord clamp accepts a wide range of cord sizes, providing a secure grip without damaging the cord.