Leviton 5466-C 20 Amp, 250 Volt, Plug, Straight Blade, Industrial Grade, Grounding, Black-White Ergonomically Designed Fluted Body with Radial Gripping Ridge Creates an Ideal Surface for Gripping and Pulling Catalog and NEMA Numbers Printed on Cord Clamp for Easy Identification Internal Wiring Chambers Isolate Individual Conductors to Prevent Flashover, Arcing, and Excessive Heat Buildup Transparent Wiring Chambers Provide a Means of Visual Inspection of Conductors and Terminals Power Indication Devices Equipped with Green Neon Bulb Rated at 30,000 Hours (24/7) for 3.5 Years