Leviton 2311-B 20 Amp, 125 Volt, NEMA L5-20P, 2P, 3W, Locking Plug, Industrial Grade, Grounding- Black Super Tough Nylon Body Resists Damage From Severe Impact, Abrasion and Chemicals NEMA and Non-NEMA Configurations Available Solid Brass Blades And Contacts Feature Improved Conductivity, Low Resistance, Low Heat, and Long Life Internal Wiring Chambers Isolate Individual Conductors to Prevent Flashover, Arcing, and Stray Strands of Wire Industrial Grade