Aspire Nautilus X Replacement Coil Heads are designed for mouth to lung vaping, these Aspire Nautilus X coils are designed with the U tech technology for the Aspire Nautilus X tank, Nautilus XS tank and Rover 2 Kit. Essentially the air flows down one side of the coil until it passes though the other side in a U formation before it reaches the mouthpiece.
 
Specs:
Aspire Nautilus X replacement coils available in 5 packs as:
-1.8 ohm (12-16W)
-1.5 ohms (14-20W)
-0.7 Mesh Coil.