The Innokin iClear 16 Dual Coil atomizer now with dual coils, 4 wicks and replaceable coil heads! Dual coils & 4 wicks give this atomizer an outstanding throat hit and very good flavour. The replaceable coil heads make this product affordable & economical. They are strong and sturdy, with a metal band around the base and screw top mouthpiece. They have a surprisingly long life. These are low resistance and have a big capacity.Filling is easy. Just unscrew the mouthpiece and fill up the tank. Replacing coil heads is a snap too. Simply take off the old one and screw on another.