Amazon.com: GearIT 50-Amp Extension Cord for RV and EV (100 Feet) 4-Prong 250-Volt, Tesla Model 3/S/X/Y, NEMA 14-50P to 14-50R 6/3, 8/1 STW AWG Gauge Outdoor Auto Power Cord : Tools &
parkworld 30 ft. STW 6/3+8/1 4-Wire Heavy-Duty RV/EV/Generator 50 Amp 125-Volt/250-Volt 14-50 Extension Cord NEMA 14-50P to 14-50R 885798 - The Home Depot