The Uwell Whirl 2 Tank is built from durable stainless steel with a curved design to protect the glass from damage during drops. With a 3.5mL e-liquid capacity, this tank is compatible with the Whirl Coil Series, offering versatile vaping options for both MTL (Mouth-to-Lung) and DL (Direct-Lung) styles using the 1.8ohm or 0.6ohm coils. Its dual slotted bottom airflow control ring allows precise adjustments, letting users fully open or close the airflow to tailor their vaping experience for enhanced flavor or vapor production.