Rebuildable Tank Atomizers (RTAs) are a type of vaping device that lets users build their own coils and customize their e-cigarette experience. Instead of using pre-made coils like in traditional tanks, RTAs give you the freedom to create coils to your exact preferences, which can lead to better flavor and vapor production. They also let you choose the kind of wicking material you want to use, giving you even more control. While they require a bit of knowledge and practice to set up, many vapers love the customization they offer, making them popular among seasoned enthusiasts. Plus, RTAs are usually more cost-effective in the long run since you can reuse the tank and only replace the coil builds as needed.