EPICORD RV Power Inlet Twist Lock Plug 50AMPS, 125/250V with 3 Stainless Steel Pins, Black Specification 50 amp125V/250VNEMA SS2-50R4 Wires Materials Constructed of Non-metallic High Grade Polymer Housing with Rust free Metal Terminals to ensure a reliable connection; Durable construction made to withstand harsh weather conditions Durable Our housing is made from the highest grade polymer and terminals are made of rust free metal, our adapter will not degrade in harsh marine weather conditions Weatherproof The cover makes a secure and tight seal to the body, when door is closed and installed properly and installs directly into the RV ETL and US Approved, 1-year Warranty. Factorydirect,qualityassurance. That power cord Will be your best choice!