This adapter allows you to convert your Aspire Nautilus X tank from 2ML to 4ML capacity. It comes with a replacement 4ML glass tube and an inside air tube extension. This adapter works with any color Nautilus X tank.
NOTE: This adapter only works with the Nautilus X tank. It will NOT work with the Nautilus or Nautilus Mini tanks. If your tank's name does not include the X, you do not have a Nautilus X tank, and this adapter is not for you.