AC WORKS® [S10301430-018] 3-Prong 30A Dryer Plug to 4-Prong Dryer Fema – AC Connectors
AC WORKS 6-50 Welder Adapter (14-30 30A 4-Prong Dryer to 6-50) - Amazon.com
parkworld EV Charging Adapter 30 Amp 125/250-Volt Dryer 3-Prong NEMA 10-30P Plug to 50 Amp 125/250-Volt 4-Prong 14-50R Connector 63050 - The Home Depot
30 Amp NEMA 14-30P to 14-30R and 14-50R Splitter Power Cord Adapter - – GearIT