For those who are looking for alternative coils for either the Voopoo Uforce or the Freemax fireluke mesh tank, it would be both of them! They both have the same thread and they fit perfectly in both tanks.
^ here are both of the packaged coils side by side
^ It is very similar in terms of shape and sizing for the coil
^ you can see that both coils are swapped into the tanks. The coils also reads and it works well.