The Innokin iClear 16D Bottom Dual Coil Clearomizer has dual coils, 4 bottom wicks and replaceable coil heads! These clearomizers, when used with the 510 iTaste, MPV or Ego style battery “easily” outperform other CE4's & CE5's on the market today! Dual bottom coils & 4 wicks give this clearomizer an outstanding throat hit, abundant vapor and greater performance. 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 surprising long life. These are low resistance and have a 1.6ml capacity. Filling is easy. Just unscrew the base and fill up the tank while holding it upside down. Replacing coil heads is a snap too. Simply take off the old one and screw on another. Utilizes the popular Ego 510 threading. Price includes one clearomizer.