ALEKO® L50-30 Adapter plug 50A Male to 30A Female is RV plug which allows you to connect you RV to the power outlet at your house or a campsite.This RV locking adapter has been designed tough and made from the highest quality materials. The compact design is easy to use and allows for easy removal from outlet. This plug is corrosion resistant. And the best part is that you get this good quality item for a reasonable price.