This pack of 5 Aspire BVC Coils (bottom vertical coils) is a upgrade of the bottom dual coil (BDC) design. These are new and improved Aspire BVC coils that last longer and produce huge vapour clouds.
For those of you that have already purchased clearomizer tanks from us you can just upgrade your model by just adding these new and improved BVC coils.
These coils fit the following clearomizers
Aspire K1 Glassomizer 
Aspire K2 Tanks
These BVC coils do not fit the Aspire Nautilus or K3 tanks.