Query: 20 amp male to 30 amp female
Parkworld 886696 Generator Adapter 3-Prong 20 AMP 5-20P Male to 30 AMP 3-Prong Locking L5-30R Female (2 Feet)
Leisure Cords 15A Male To 30Amp Female Twist Adapter RV Locking Power Cord Male to Female Camper Generator Cable Adapter Electrical Converter Plug (15A Male To 30A Female)
PowerFit PF922033 4-Prong 20-Amp Male Plug Adapter for 30-Amp Female Connector
Conntek 14340 30Amp RV to 15/20Amp Pigtail Adapter