M19 Waterproof Connector 20A IP68 2 3 4 5 6 Pin Connectors Male Female Welding Seal Outdoor Cable Connector for LED String Light _ - AliExpress Mobile
Tripp Lite 6in Power Cord Adapter Cable L5-20P to 5-15/20R with Locking Connectors Heavy Duty 20A 12AWG 6" - power - P046-06N-T - Power Cables - CDW.com
USA 3-Prong Male AC Plug, UL Nema 6-20P 3 Pole Straight DIY Rewirable AC Plug, 20A 250V USA 3Pin AC Connector, Nema 6-20P Male US 3Pole AC Power Plug, Black - Amazon.com
Tripp Lite 6in Power Cord Adapter Cable L5-20P to 5-20R Heavy Duty 20A 12AWG 6" - power connector adapter - NEMA L5-20 - P046-06N - Power Cables - CDW.com