Coil I Quartz Coil 1.2Ohm (5-Pack): Atomizer Resistance: 1.2ohm. Smooth Pure Taste. More Health. Coil II Ceramic Coil 1.2Ohm (5-Pack): Atomizer Resistance: 0.33ohm. Heat Fast. Cloud Smoke. Coil III Ceramic Coil 0.6Ohm (3-Pack): Atomizer Resistance: 0.6ohm. Big Rips. Greater Vapor. Coil V See-Through Quartz 1.2Ohm (4-PACK): Atomizer Resistance: 1.2ohm. Includes: 3 - 5 x Replacement Coils.