The Wotofo Bravo RTA is a 25mm diameter rebuildable tank with amazing knurling and great airflow. Features a floating two clamp build deck with built in grooves into the post, making it easy to install your coils. The screws are heated treated Phillips Screws and extra long to allow for bigger builds. With the 1/2 twist design top cap, it is easy to get your top cap on, just press down and twist it 1/2 turn. The Bravo RTA has a 4.5ml standard capacity, which can be extended to 6.0ml capacity by replacing with included bubble glass tube.