ASPIRE BVC DUAL REPLACEMENT COIL HEADS 1.6OHM or 1.8 OHM COILS (Boxes 5) For use in the following Aspire Tanks - K2, ET-S, K1, CE5 GENUINE Aspire BVC Coils - Each box comes with the Authenticity Scratch Code These Aspire BVC replacement coils are specially designed for the Aspire series of clearomizers and glassomizers that are built with bottom vertical coils. They are an upgraded version of the traditional bottom dual coil (BDC) replacement coils. Please Note: These Replacement Aspire BVC Coils are NOT compatible with the Aspire Nautilus and Aspire Nautilus Mini Tanks BVC is the latest innovation in atomizer technology. Bottom vertical coils feature a new and more efficient wick system made of high-quality materials. BVC configurations promise to deliver a more pure taste and more prominent flavors than the old style BDC coils.