The Coilart Mage Mech Mod V2 is constructed with brass and is painted with an electroplating frosted black to enhance it's overall look. This device is compatible with 18650, 20700 and 21700 batteries that made to give power all day long with just two batteries that are series stackable. The creative hybrid system of this product allows for most atomizer's 510 pin to be in touch with the battery directly which makes it better for a faster hit via a better power shift. Since the pin is gold plated, the Coilart Mage Mech Mod V2 can easily supply a large amount of firing while reducing the heat at the same time. If this little number suits your fancy, it's time to invest in yourself and get one of your very own!