MaxxHaul 30-Amp 125/250-Volt NEMA L14-30p Watertight 4-wire Industrial Locking Connector, Black at Lowes.com
100 Foot Extension Power Cord - NEMA 4 Prong Twist & Lock
ONETAK NEMA L14-30P to 14-30R 120V/240V 30 Amp 4 Prong Male Plug Twist Lock to 4 Prong Female Receptacle Dryer Welder EV Charger RV Generator Power Cord Adapter - Newegg.com
Amazon.com: Houseables 30 Amp Generator Cord 4 Prong, Extension Generator Cable, 10 FT, 125-250v, 7500 Watt Max Rating, UL CUL, NEMA L-14-30P, Rubber, 10 Gauge, Heavy Duty, L14-30, Transfer, Twist Lock Power
Parkworld L14-30P Generator 4-Prong 30amp Twist Lock NEMA L14-30 Plug
VEVOR 15 ft. 6/3 plus 8/1 Extension Cord Indoor/Outdoor Generator Power Cord STW 50 Amp 4-Prong UL with Twist Lock Connectors FDJYCX15FTX50ACZ1V1 - The Home Depot
Gen RV 30 Amp Generator Cord, 3-Prong 10 Gauge Heavy Duty L5-30 Male Generator Power Cord Up to 3750W - Leisure RV Parts