AC WORKS NEMA 6-30 Male Plug to NEMA 6-20 Female Connector 20-Amp 3-wire Grounding Single To Single Orange Basic Elbow Adapter in the Adapters & Splitters department at Lowes.com
Hubbell 520SP 20 Amp 125 Volt NEMA 5-20P Nylon Straight Blade Plug | Independent Electric