The new BVC Series Replaceable Coils are developed for Clearomizer series,they are upgraded version of BDC Clearomizer replacement coils , the BVC coils have new wick in it,which use the high-tech material and technology, the taste will be purer, it works better than the old BDC coils. Compatible with common BDC clearomizer series such as the ET, ET-S,CE5,CE5-S