Leviton 5459-VY 20 Amp, 250 Volt, Connector, Straight Blade, Industrial Grade, Grounding, Python, Yellow Toughened, high impact resistant nylon housing resists rough use An exclusive, clear thermoplastic back-terminal cover allows visual inspection of terminal wells, so wiring is easier Curved and crimp-lock terminal clamps provide superior electrical connection without cutting wire strands NEMA configuration and ratings molded on device One-Piece Connector Contacts for Superior Conductivity