AC WORKS 10ft NEMA 10-30 Cord 10-ft 10 / 3-Prong Indoor/Outdoor Stw Heavy Duty Appliance Extension Cord in the Extension Cords department at Lowes.com
Parkworld NEMA L5-30 Extension Cord, Generator Locking 3-Prong, 30 AMP
30 Amp EV and Dryer Extension Cord, 4 Prong NEMA 14-30P to 14-30R 125/250V | eBay
Superior Electric RVA1527 25 ft. 30 Amp NEMA TT-30R RV 10AWG Extension Cord Plug NEMA TT-30P W/Handle - Walmart.com
VEVOR Generator Power Cord 30 ft. 50 Amp 125/250-Volt RV Extension Cord 12,000-Watt STW Cable ETL Listed with N14-50P Outlet FDJYCX30FT50AHCZ1V1 - The Home Depot
Amazon.com: dé 30 Amp RV Extension Cord, 15 FT Extension Cords for Car Camping,3 Prong RV Power Cord with NEMA TT-30P to TT-30R Plug,Heavy Duty 10/3 Gauge STW, Durable Heat-Resistant for 125V/3750W-ETL