Aspire BVC coil heads have a single coil that runs vertical and is surrounded by 100% cotton. There are now 4 holes on the side of the coil head to allow better absorption of your e liquid.
Aspire BVC coil heads are compatible with the following Aspire tanks:
Aspire Ce5 series
Aspire ET series
Aspire Vivi Nova series
Not compatible with Nautilus or Atlantis