Larson Electronics 65' 12/3 SOOW Twist Lock Extension Power Cord - L5-20P to L5-20C -
USW 12/3 Twist to Lock Multi Outlet Adapter 3-ft 12 / 3-Prong Indoor/Outdoor Sjtw Heavy Duty General Extension Cord in the Extension Cords department at Lowes.com
MaxWorks 80841 25 Ft. Heavy Duty 4-Prong Twist Lock 125V/250V 30 Amp L14-30P (Male) L14-30R (Female) Generator Extension Cord, Black and Yellow - Amazon.com
Extension cord for 120V pump with twist lock plug (L5-15R to L5-15P) - The Electric Brewery
Extension cord for 120V pump with twist lock plug (L5-15R to L5-15P) - The Electric Brewery