Parkworld brand, #63357 100 ft. heavy-Duty RV/Marine/Generator 50 Amp NEMA 14-50P Straight Plug to 50 Amp SS2-50R Generator Extension Cord. It has a RV/Generator 50 Amp 125-Volt/250-Volt 4-Prong NEMA 14-50P Straight male plug and a 50 Amp 125-Volt/250-Volt 4-Prong Twist Lock SS2-50R female connector. This Generator power cord allows you safely connect the 50 Amp power service from RV parks and campgrounds to a locking style 50-Amp 125/250-Volt NEMA SS2-50P (CS6365)inlet. It also 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 SS2-50 inlet, 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.