ZAZFO 50ft 50A RV extension cord is ETL certified heavy-duty power cable with NEMA 14-50P male & 14-50R female plugs. It supports 125/250V dual voltage and up to 12500W max power for RV, trailer, EV and home outdoor use. Made of 99.99% pure copper wires, it provides stable current with low power loss, and tight plugs prevent loose connections. The SJTW PVC jacket reaches IP65 waterproof grade, resisting heat, corrosion and cold down to -40°F for all-weather outdoor use. Flexible outer material allows easy coiling and portable storage for your camping and travel needs.