The letters in RDA stand for “Rebuildable Dripping Atomizer”. Essentially, an RDA Atomizer is a type of atomizer that enables you to manually drip e-juices. Dripping is just the process where the user drip e-liquid onto their wick before vaping. They then take a hit and the wick quickly gets dry again. Dripping is once again required and the cycle repeats until the user is done vaping. These atomizers may seem a bit annoying at first. They’re only designed like this for easy use and the best flavor. Some RDAs are also dripped using easier methods like squonking, meaning that you’ll get an awesome experience with even less work. There isn’t any sort of storage for e-liquid unless you use an atomizer that’s a mix between an RDA Atomizer and an RTA – also known as an RDTA. Everything about these atomizers is very easy to adjust, too. It’s useful!