I also have coils for sale if you need them. They are very high quality ones, not the average alibaba ones you can get online. We actually know the people over in china making them. I wouldnt say that theyre "extended life" like the Dnail claims but they are the highest quality we could make after several months of searching for the best coil design/materials.
Very reasonable prices compared to the d-nail site as well.
Sorry this was so long but i couldnt figure out where to send you a private message i think because youre so new.