Introducing Innokin Gladius Adjustable Airflow Dual Coil Clearomizer. It is Innokin’s first clearomizer with Adjustable Airflow Control. The Gladius features 1.4ml capacity which makes ideal size for small to medium size PV batteries. The body is crafted from food-grade Stainless Steel. The tube is made of Pyrex Glass which is used for laboratory glassware and kitchenware. Because of its non-reactive and low expansion characteristics, Pyrex Glass is ideal material for holding and storing e-juice. For best vapor production and throat hit, the Gladius comes with the new replaceable Bottom Dual Coil design. Available in two different resistance variations: 1.5 Ohm and 2.1 Ohm.