Parkworld 61810 Adapter Cord 4 Prong Generator Plug L14-30P to 10-50R Electric Stove Receptacle, NEMA L14-30 Generator Male to NEMA 10-50R Electric Stove Female, 30A 250V 7500W, 1FT - Walmart.com
RV 30 Amp Generator Plug Adapter 3 Prong - RecPro
Superior Electric RVA1591 30 Amp Male NEMA L5-30P to 50 Amp Female NEMA 14-50R Adapter Plug for RV & Electric Vehicles