New ! Aspire Nautilus BDC Glass Clearomizers (Adjustable Airflow Tank System) $29.99 Aspire Nautilus BDC Glass Clearomizers,made with the newest bottom dual coil system and an exclusive adjustable airflow design. Features: 1.The unique airflow valve, there are 4 holes in different size on the base part,by rotating the valve,you can control the airflow to the amount you prefer. 2.Replaceable stainless drip tip of Aspire Nautilus BDC Glass Clearomizers. 3.The tube is made of pyrex glass material and compatible with various ejuice, which makes your vapor more healthy,each tank can hold 5ml ejuice.