GearIT 50 AMP Male (NEMA 14-50P) to 30 AMP Female 3 Prongs (NEMA TT-30
Conntek RV Generator Adapter with 20 Amp 3 Prong Locking Male Plug To RV 30 Amp | eBay
AC WORKS Adapter Kit for 30A RVs 30-Amp 3-wire Grounding Single To Single Yellow Basic Compact Adapter in the Adapters & Splitters department at Lowes.com
WEN 120-Volt 30 Amp 3600-Watt Generator to RV Adapter, NEMA L5-30P Twist-Lock Power Plug to TT-30R RV-Ready Outlet GNA030 - The Home Depot