Adapter #128 50A 240v 3.5ft. cable NEMA 14-50 to two duplex outlets, a – BSA Electronics
Amazon.com: BOEEMI 4 Prong New Electric Dryer Plug Male to 3-Prong Old Dryer Receptacle Female Connector Adapter, NEMA 14-30P to 10-30R 4-Prong Dryer Outlet Adapter, 30A 125/250V 1.5FT, UL Compliant : Tools
BloomGrow 220V / 240V to 110V / 120V Plug Adapter Electrical Converter for US (4PCS) - Walmart.com
Amazon.com: BloomGrow 110V / 120V to 220V / 240V Plug Adapter Electrical Converter for US (1 PC) : Electronics
EVSE adapter plugs into 1996 and up Dryer outlets and 50amp Electric R – BSA Electronics
Universal Plug Adapter - NEMA 6-20P - 208/220/230/240 Volt Max 10A With Surge Protector Voltage Indicator - AliExpress
Direct 4 Prong to 3 Prong Adapter Cord, Full Kva 230V
240 Volt to 120 Volt Outlet Adapter, Converter for Gas Stove/Range Upgrade 10-50P to 5-15R - Walmart.com