L14-20P Twist Lock Male 4-Pin Plug To 5-20R 3-Prong Female Receptacle Outlet NEMA Electric Power Cord Adapter/Converter 220/250V input 220/250V Output - Amazon.com
K&M Camera :: Camera Accessories :: Quad Box | 50' | Twist Lock | 30amp 220V
Amazon.com : ONETAK NEMA L14-30P to 6-15R 6-20R 240V 30 Amp Twist Lock 4 Prong Male Plug to 240V 20 Amp Twist Lock 3 Prong Female Receptacle Generator Welder Dryer EV Charger
Parkworld 64682 Generator 30A to 20A, 220v to 110v Adapter Cord NEMA L14-30P Male 4-prong Twist Lock Plug to (4) 5-20R T-Blade Household 5-15R Four Outlets Female with Two of 20amp Circuit
50 AMP RV Power Cord Locking Shore Connector Replacement End Marine Twist Lock | eBay