Heavy duty NEMA 5-15P to 6-20R power adapter cable. Convert your equipment to be able to plug into a standard 110v outlet. Often used by electric vehicle owners to convert their dual voltage Duosida/Dostar chargers from a 240v level 2 charger to plug into a standard 110v outlet.
Just over 12" from end to end. Using this will NOT provide 240 volts to your vehicle.