Amazon.com: RVGUARD 3 Prong 30 Amp 40 Foot Generator Extension Cord, NEMA L5-30P/L5-30R 125V 10 Gauge SJTW Generator Power Cord with Cord Organizer, ETL Listed : Automotive
VEVOR 30 Amp Generator Cord 4 Wire 10-Gauge 40-ft / 4 3-Prong Outdoor Sjtw Heavy Duty General Extension Cord in the Generator Accessories department at Lowes.com
Houseables Generator Extension Cord, Electric Wire, 3 Prong, 30 Amp, 250 Volt, Single, Black, 25 Ft, All Rubber, 10 Gauge, Heavy Duty, L6-30, Commercial, Electrical Power Cable, with Locking Switch - Amazon.com