SEEUTEK 15 ft. 10/4 50 Amp Generator Extension Cord 4 Prong 125-Volt Indoor/Outdoor Extension Cord L14-50 with Lighted End Black BZ-1401 - The Home Depot
Champion Power Equipment 50-Amp RV Generator 30-ft / 1 3-Prong Outdoor Heavy Duty Locking Extension Cord in the Extension Cords department at Lowes.com
Amazon.com: RVINGPRO 50 Amp Generator Cord and Pre-Drilled Power Inlet Box, 15FT Generator Cord 50 Amp 4 Prong, 125V/250V NEMA 14-50P / SS2-50R, 50 Amp Transfer Switch Kit for Generators, ETL Listed :