AC WORKS 1.5ft Piggy-Back NEMA 14-50P to NEMA 14-30R 50-Amp 4-wire Single To Single Orange Basic Piggy-back Adapter in the Adapters & Splitters department at Lowes.com
Cord Supply 6' 3PH 50 AMP Plug | AMACO Brent
ELEGRP 30 Amp/50 Amp 125/250-Volt 3-Pole/4-Wire NEMA 14-30P/14-50P Grounded Straight Blade Angle Plug, Black S143050P - The Home Depot
Eaton Cooper Wiring Devices CS6365EX 3 Pole 4 Wire 50 Amp Cord Plug 125/250 Volt
Utilitech 50-Amp 125/250-Volt NEMA 14-50p 4-wire Grounding Heavy-duty Straight Plug, Black in the Plugs & Connectors department at Lowes.com
Wiring Device-Kellems CS8165C | McNaughton-McKay
AC WORKS California Standard CS8364 50 Amp 3-Phase 250-Volt 4-Wire Locking Female Connector CS8364 - The Home Depot
Hubbell HBL8452C 50 Amp 250 Volt 3-Pole 4-Wire NEMA 15-50P Black Straight Blade Plug | Cooper Electric