RTA's and RDA's are the two kinds of RBA. The RTA (Rebuildable Tank Atomizer) is a tank framework and the RDA (Rebuildable Drip Atomizer) or RDTA (Rebuildable Dripping Tank Atomizer) is a dripper framework. With rebuildables, you "fabricate" your own curl. As it were, you genuinely wrap a loop, join it to the framework and include a wick. There are a wide range of fabricates, every one relying upon the RBA type and the ideal vape the client wishes to accomplish.