The new Aspire BVC Coils are the upgraded version of the Aspire BDC Coils. These Aspire BVC Coils are not for the Nautilus. The new Aspire BVC Coils have a new wick technology inside which uses the same high-tech material and technology found in the Aspire Nautilus BVC Coils to provide a pure flavor and a more saturated vape. The new Aspire BVC Coils also feature 4 holes to improve the overal wicking of the coil and provide an overall better vape. We have been testing these Aspire BVC Coils for some time and we are very impressed with the result.