These atomizers or coils are for replacement to the 90W E devices. They provide ultimate vapour and retain the juices flavour. Built with extra long-lasting reliability, you can count on these to last. When your atomizer or coil wears out,simply replace the atomizer rather. Easy replacement as the faulty atomizer is removed and the new one just fitted in. instead of buying a whole new device! Simply unscrew the old one and screw in the new one. The atomizers in all clearomizers are consumable devices and tend to last longer, depending on your usage and the power wattage your battery powers them with or that set by the device. Replacing the clearomizer is expensive, but buying replacement atomizers is even cheaper. Because you keep the same clearomizer you only need to purchase the interior atomizer component.