Leviton 15W33 20 Amp, 125 Volt, Connector, Straight Blade, Industrial Grade, Grounding, Wetguard, Yellow Santoprene Husk is resistant to oil, acids, alkalis and many industrial solvents NEMA Configuration Number and Rating Molded Onto Device Face Innovative Strain Relief System and Compression Nut Provide a Watertight Seal and Prevent Cord Slippage Heavy-Duty, One Piece Nickel- Plated Brass Contacts for Maximum Conductivity Rubber Body is Molded to Bondable Nylon Substrate to Maximize Sealing Capability