With massive post holes, this RDA can easily be fit with Quad 20g Coils. And with giant flat head screws in the posts, its easier to tighten them down securely. With its large dual cyclops air holes, its perfect for those builds that demand large airflow. Silver plated contacts help keep voltage drop to a minimum, and a delrin insulator insert in the top cap helps keep your drip tip cool. Available with in either GOLD or BLACK air flow rings.