15FT 14-50P to SS2-50R 120V/240V 50 Amp 6/4 AWG Stow W/L14-30P to 14-50R Power Cord Adapter Combo Kit 4 Prong Male to 4 Prong Twist Lock Receptacle
50A inlet box
Extension cord and inlet box never used. They were intended for bring power in from a generator to a sub panel.