The Tobh rebuildable dripping atomizer (RDA) is a beautiful, high quality clone by TOBECO. It is made of stainless steel and consists of 3 pieces. An adjustable air flow control feature provides different levels of draw, while the unique heat sink design on the top cap allows the heat to dissipate. The internal portion of the top cap also features a conical design to decrease turbulent airflow or low pressure. The 510 center connection is made from copper to offer a strong conductivity and performance.