The Prism S replacement coils are compatible with the T20 Prism tanks by Innokin.
Each pack of replacement coils consist of 5 coil heads:
GT Cores by Vaporesso
Regular price $17.95
Caliburn G Replacement Coil
Regular price $21.95
PnP Coils by VooPoo
From $11.95
Caliburn Cartridges by UWell
Regular price $19.95