Uwell Crown 2 Coils are made specifically for the Crown 2 Tank. The Crown 2 coil has a tapered positive connector for smoother airflow and larger absorbent openings. These coils have three resistances: 0.25 Ohm for increasing cloud cover, 0.5 Ohm for balanced cloud and flavor, and 0.8 Ohm for better flavor, longer life, and lower e-juice consumption. Compatible with the Uwell Crown 2 SubTank.