RDA, or Rebuildable Dripping Atomizer, is a type of atomizer used in vaping devices. Unlike tanks, RDAs do not have a built-in tank to hold e-liquid. Instead, users directly drip e-liquid onto the coil and wick, providing a fresh and customizable vaping experience. RDAs are popular among vaping enthusiasts for their ability to deliver intense flavor and produce large clouds of vapor. They offer versatility in coil building, allowing users to experiment with different coil configurations and materials. RDAs are ideal for those who enjoy the process of building and customizing their own coils to achieve a personalized vaping experience.