LAZMUMI 30 Amp 25 Feet RV Extension Cord, Heavy Duty 10 Gauge 3 Prong 125V, NEMA TT-30P to TT-30R Outdoor Camper Power Cord Waterproof with Cord Organizer for RV Trailer Campers - Yahoo Shopping
HZXVOGEN 25-Foot Heavy-Duty Generator Extension Cord, Generator Lock C
AC WORKS AC Connectors 10 ft. 10/4 Heavy Duty SOOW L14-30 30 Amp 125/250-Volt Generator Rubber Extension Cord L1430PR-010 - The Home Depot
10/3 AWG NEMA TT-30 30 Amp Generator Extension Power Cord – GearIT
AC WORKS 100ft NEMA L14-30 Cord 100-ft 10 / 4-Prong Indoor/Outdoor Soow Heavy Duty Locking Extension Cord in the Extension Cords department at Lowes.com