These Bottom Dual Coils have a thicker base, the wicks are virtually invisible, and the screw-into-the-base threads prevent gurgling and leaking better than ever. That's not to say you'll never experience leaking or gurgling sounds, but if you do it will be a rare occurrence.
Because it is a bottom coil you can unscrew the base, lift out the coil head and check it to make sure it's tight, or change it out altogether, even if you have a full tank of juice.
Coil is changed by removing the entire base and then removing the coil unit, replacing it with this unit.
This is the Dual coil from Kangertech and it will ONLY fit the following Tanks / Atomizers
Mini Protank 3,
Evod 2, T3D
Pack of 5