Conntek® 30-Amp Turn Lock to 15/20-Amp Straight Blade Generator Adaptor at Menards®
5 20P FOR 5 20R, 20 Amp T Blade Male Plug for 15A / 20A, 5 20P FOR 5 15R NEMA 5 20 P Male for Nema 5 15 / 20R Female AC Adapter|International Plug Adaptor| - AliExpress
Furman ADP1520 - ADP1520 Adapter Cord 20 Amp Socket to 15 Amp Plug - 1 FT - Herman ProAV
AC WORKS AC Connectors Adapter RV 30 Amp TT-30P Plug to 20 Amp 125/250-Volt L14-20R Female (2-Hots Bridged) Adapter ADTTL1420
GE 50 Amp to 20 Amp Adapter Plug AD5020
Valterra A10-G30420Y 4 Prong 30 Amp Male X 20 Amp Female Generator Y Adapter
50A NEMA 6-50P to 20A NEMA 6-20R Adapter With 20 Amp Breaker by AC WORKS® | eBay
1FT 50 Amp 14-50 Piggy-Back Plug to Household 15/20 Amp Connector Adapter Cord – AC Connectors
20 amp to 15 amp IEC Adapter – VooDoo Cable
Conntek 30123, 20 to 15/20-Amp Generator Locking Adapter with NEMA L5-20P to 5-15/20R, Yellow | M1341993 - GLOBALindustrial.com