Extension #7 30A Heavy duty extension cord 14-30 plug to 14-30 box out – BSA Electronics
AC WORKS 25ft NEMA 14-50P to NEMA L14-30R 30-Amp 4-wire Single To Single Black Basic Flexible Adapter in the Adapters & Splitters department at Lowes.com
Amazon.com: Nema 14-30P Dryer Splitter Extension Cord, Nema 14-30P 30-AMP Male Plug to (2) 14-30R Female Receptacle, 4-Prong Dyer Y Split Adapter Cable 1.0Meter : Tools & Home Improvement
Conntek EV1430T NEMA 14-30P to 14-50R EV Adapter
Amazon.com: CircleCord UL Listed 4 Prong 50 Feet Dryer/EV Extension Cord, 30 Amp NEMA 14-30P/R, Suit for Level 2 EV Charging Such as Tesla Model 3/X/Y/S and 4 Prong Dryer, 125V/250V STW
GearIT 30-Amp 10/4 AWG NEMA 14-30P to 14-30R STW EV Power Cable
AC WORKS 30 Amp 125-Volt/250-Volt NEMA 14-30 4-Prong Dryer Plug to 2 NEMA 14 -30 4-Prong Dryer Connections with Switch EVY1430SW-036 - The Home Depot
220V - 240V EV Charger Extension Cable NEMA 14-30 – Splitvolt
AC WORKS® 30A 125/250 Volt NEMA 14-30 4-Prong Dryer Extension Cord – AC Connectors
Nema 10-30P to 14-30R Dryer Adapter, 4-Prong to 3-Prong Plug Adapter Cord 30A | eBay
20 ft. 10/4 SOOW 30 Amp 4-Prong Dryer Heavy-Duty NEMA 14-30 Extension Cord | UltimateAdapterDepot
parkworld 10 ft. 10/4 STW 30 Amp 4-prong Dryer Heavy-Duty NEMA 14-30 Extension Cord 886467 - The Home Depot
Parkworld 886603A NEMA 14-30 Splitter, Dryer 14-30P Male Plug to (2) 14-30R Female Receptacle, Dryer 4-Prong 30 AMP 14-30 Y Adapter Cord 12 ft. - Newegg.com
Parkworld 66068 EV Extension Cord, Dryer 4-Prong NEMA 14-30 Extension Cord, EV 14-30P to 14-30R, 30A, 125V/250V, 7500W (25FT) - Walmart.com