Leviton 2415 20 Amp, 125/250 Volt, Flanged Inlet Locking Receptacle, Industrial Grade, Grounding, Gray Super Tough Nylon Body Resists Damage From Severe Impact, Abrasion and Chemicals Positive Crimp Lock Wire Clamps NEMA L14-20P, 3 Pole 4 Wire Terminals accommodate #18-#10 AWG Guage Wiring