Amazon.com: Cable Matters 4 Prong Replacement 50 AMP RV Power Cord, Generator Extension Cord/Generator Power Cord (NEMA 14-50P to 4 Wire) - 10 Feet : Automotive
parkworld 3 ft. Generator 30 Amp 125/250-Volt 4-Prong Locking Plug L14-30P to 50 AMP 125/250-Volt SS2-50R(CS6364) Adapter Cord 62176 - The Home Depot
Superior Electric RVA1624 50 Amp NEMA SS 2-50R 125/250-VAC Generator Power Cord Connector - CS6364
Amazon.com: 50 Amp Generator Extension Cord 15FT and Power Inlet Box, NEMA 14-50P/SS2-50R Generator Cords, RV Power Cord with NEMA SS2-50P Generator Inlet, ETL Listed, Weatherproof : Patio, Lawn & Garden
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
DuroMax 50-Amp 25-Foot 6-Gauge 14-50 CS6364 Heavy Duty Home Power Backup Generator Cord in the Generator Accessories department at Lowes.com
RV Generator L14-30P 30A 4-Prong Plug to 50A RV/Marine Adapter Cord – AC Connectors
SEEUTEK 25 ft. 10/4 50 Amp Generator Extension Cord 4 Prong 125-Volt Indoor/Outdoor Extension Cord L14-50 with Lighted End Black BZ-1402 - The Home Depot