Amazon.com: RVGUARD 4 Prong 30 Amp 75 Foot Generator Extension Cord, NEMA L14-30P/L14-30R, 125/250V Up to 7500W 10 Gauge SJTW Generator Cord with Cord Organizer, ETL Listed : Automotive
VEVOR 40 ft. Generator Extension Cord 110-Volt 30 Amp Generator Cord UL Listed Generator Power Cord with Twist Lock Connectors FDJYCX40FT30A0001V1 - The Home Depot
Champion Power Equipment 25 ft. 125-250V 30A Flat Generator Extension Cord at Tractor Supply Co.
25 ft. 30A 125V Generator Extension Cord - Champion Power Equipment