ALEKO® RV15M30FA Adapter plug 15amp Male to 30amp Female is RV plug which allows you to connect you RV to the power outlet at your house or a campsite. It's a pretty small but very useful accessory especially when you need to charge your batteries, or when you find that the campsite outlet doesn't match the one on your RV. And the best part is that you get this good quality item for a reasonable price.