Serin RBALOADED or UNLOADED This RBA can be bought preloaded with coils! What does this mean? This means the RBA will have the coils of your choice already installed into the RDA! Already dry fired and wick'd up with the finest FUZZ cotton. All you need to do is screw it onto your favourite mod, add juice! The Serin brings together everything we've learned from previous projects and applies those innovations to the AIO world. If youre after a user friendly,