Simply screw this into the top of your mod then screw in your atomiser / Clearomizer
Helps reduce heat between atomiser/Clearomizer and your mod
Saves wear on your mods 510 threads by leaving it fitted
Floating copper 510 center pin
22mm Version Fits all 510 devices such a
Toptank Mini And many many other 22mm Tanks
Fits Subtank Mega
TFV4 and a variety of other 25mm tanks.