The SMOK RPM 40 Replacement Coil is perfectly compatible with SMOK RPM 40 Kit/SMOK RPM 40 Pod. The SMOK RPM 40 Coil has Mesh 0.4ohm/Quartz 1.2ohm/SC 1.0ohm/Triple 0.6ohm for your selection. The different coils will neet your different needs for optimal flavor or dense cloud.