The Uwell Crown 3 Replacement Coils are vertically oriented parallel atomizer heads made from organic cotton for the Uwell Crown 3 Sub-Ohm Tank. They are designed to be easy-to-install and use a thread-less Plug-Pull design in order to be replaced. The Crown 3 Replacement Coils come in a pack of four and are available in three resistance levels; 0.5ohm resistance (Rated for 70-80W), 0.25ohm resistance (Rated for 80-90W) and 0.4ohm resistance (rated for 55-65W). These stainless steel coils have massive wicking ports with pure organic cotton to help your juice get to the coil effortlessly. Ensure you're getting the best results from your Uwell Crown 3 Tank with Crown's official coils from Rich Mountain Distribution.