The Sherman RDA is constructed from stainless steel in 28mm diameter. It comes with a two-post clamp style build deck and redirected bottom airflow. The RDA is designed for large coils. There is a wide build deck with two large clamp style posts and redirected airflow channels that are raised above the juice well for enhanced flavor production. The RDA features an adjustable bottom airflow control ring and comes with a wide bore 810 drip tip.