The Fogger V4.1 is upgraded version of V4 rebuildable atomizer with new amendments like, it features now 4 juice channels and dual coil capability. It obviously contains manageable airflow system which is control by ring placed at bottom for various levels of air passing. The body material consists of stainless steel and Pyrex glass. The center pin made of copper brass which helps in minimum voltage drop and center pin is also adjustable so it will be compatible with many devices. New fogger v4.1 can hold 4.5ml juice as well.