Camco Power Grip 3-Prong Generator Adapter, 30 Amp | 1009828 | Pep Boys
Parkworld 691760 Generator Adapter 3-Prong 20 AMP 5-20P Male to 30 AMP
Amazon.com: Camco Power Grip Camper/RV Generator Adapter | Features a Heavy-Duty 30 Amp Locking Male and Female Connection | Rated for 125 Volts / 3750 Watts (55333) : Automotive
NEMA L14-30P to 6-50R Generator Plug to Welder Adapter, 4 Prong to 3 Prong Generator to Welder Adapter Power Cord 125/250V, 30 Amp, STW 10AWG 1.5FT - Newegg.com