These are authentic Crown IV coils, by Uwell, for the top fill   Sold in packs of 4, these coils are self cleaning and made of SS904L Stainless steel with optional Mesh in the following configurations:

0.4 Ohm SS904L Stainless Steel (Best 60-70 Watts)

0.2 Ohm SS904L Stainless Steel (Best 70-80 Watts)

0.23 Ohm SS904L Mesh Stainless Steel (Best 60-70 Watts)

What's In the Box?

4 x Uwell Crown IV (Crown 4) Replacement Coils