Champion Power Equipment 50-Amp RV Generator 30-ft / 1 3-Prong Outdoor Heavy Duty Locking Extension Cord in the Extension Cords department at Lowes.com
100 ft 50 amp rv extension cord – trekpower
Amazon.com: Camco PowerGrip 25-Foot 50-Amp Camper/RV Extension Cord | Features a 50-Amp Standard Male Connector & a 50-Amp Locking Female Connector | Rated for 125/250 Volts/12500 Watts (55542) : Automotive