Imagine every upgrade you wanted to make to the original TM24 RDA: squonk pin, square post-holes, Gear-Top, Titanium Screws, 810 Drip-Tip Adapter. Well the TM24 Pro-Series brings you all of that and more. This RDA was modeled, tested and redesigned countless times. From the custom packaging, post engravings to the top-cap fitment, careful attention to detail was put into this product and we think you’ll notice. All previous accessories for the TM24 are totally cross-compatible with the Pro-Series.