Amazon.com: PlugSaf 35FT 30 Amp Generator Extension Cord 4 Prong, NEMA L14-30P/L14-30R 10 Gauge STW 125/250V Twist Lock Generator Cord Heavy Duty, Green ETL Listed : Patio, Lawn & Garden
MaxxHaul 30-Amp 125/250-Volt NEMA L14-30p Watertight 4-wire Industrial Locking Connector, Black at Lowes.com
Gen RV 30 Amp to 15 Amp Tri-Outlet 4-Prong Generator Power Cord, 10 Gauge Heavy Duty L14-30 to 3X 5-15R 125/250V 7500W - Leisure RV Parts
Reliance L1430P 30-Amp Generator Power Cord Plug For Up To 7500 Watt G – L1430P – DuroMax Power Equipment
25 ft. x 10 Gauge Four Prong Twist-Lock 30A L14-30 Generator Extension Cord
Amazon.com: 3 Prong 30 Amp Twist Lock Adapter, Generator to RV Adapter Cord with Handle, L5-30P Twist Lock Male to TT-30R Female, Heavy Duty STW 10 AWG for Generator to RV Trailer
DEK 3 ft. 10/4 Heavy-Duty Cord 240-Volt 30-Amp Twist Lock Adapter for Generator Cord ACC01M21 - The Home Depot