Leviton CS8269 50 Amp, 250 Volt AC, Black and White Locking Flush Mount Receptacle, Industrial Grade, Grounding, California-Style, Black Nylon Housing for Excellent Impact Resistance and Secure Gripping Color-Coded Wire Entrance Holes for Simple, Easy Wiring Clamp-Type Wire Terminals Internal wiring chambers isolate individual conductors to prevent flashover, arcing, excessive heat buildup and stray strands of wire Black and White Plugs and Connectors are being phased in as RoHS compliant products