parkworld 25 ft. 10/3 3-Wire Generator 30 Amp 125/250-Volt 4-Prong Locking L14-30P to 30 Amp 3-Prong 10-30R Adapter Cord 886139A - The Home Depot
Gerguirry 50FT 30 Amp RV Power Extension Cord, Heavy Duty 10 Gauge 3 Wire STW Cord with LED Power Indicator, NEMA TT-30P to TT-30R with Cord Organizer for Trailer Motorhome Camper -