Parkworld brand, #886153 15 ft. Heavy-Duty RV/Marine/Generator 50 Amp NEMA 14-50P to 50 Amp SS2-50R Power Extension Cord. It has a RV/Generator 50 Amp 125-Volt/250-Volt 4-Prong NEMA 14-50P male plug and a 50 Amp 125-Volt/250-Volt 4-Prong Twist Lock SS2-50/CS6364 female connector. Made with 100% copper, UL and cUL Listed STW 6/3 plus 8/1-Gauge wires for superior conductivity, the PVC jacket ensures that cable can be used in all weather conditions. This power cord allows you safely connect the 50 Amp power service from RV parks and campgrounds to your 50 Amp SS2-50 power inlet. Also it will let you connect any generator having a 50 Amp 125-Volt/250-Volt RV/Generator NEMA 14-50R outlet to a power inlet/transfer switch box featuring a twist locking style 50-Amp 125-Volt/250-Volt NEMA SS2-50P/CS6365 inlet.