EATON L630P 30-Amp 250-Volt Hart-Lock Industrial Grade Plug with Safety Grip Black and White Used for 30-amp 250-volt with a NEMA L6-30C applications Features a smooth, tapered body that reduces snagging and provides easy handling Has neoprene gasket seals around the cord for added terminal protection from external elements Features multiple-head screws for flexibility in the installation and ease of use Single piece grounding contacts provides superior continuity