Features and Specs: Dimensions:2-1/2"L x 7/8"D 510 Threaded 22mm Diameter Glass Tank Stainless steel construction Rebuildable using mesh, ceramic wick or cotton Includes RBA Deck and Replacement Coils Supports single or dual coil builds Supports Ceramic ROCC replacement atomizer heads Dual post design with large post holes 5ml Tank Capacity Adjustable airflow control Adjustable e-Liquid control Large e-Liquid channels (2) Large airflow holes