With the RPM SMOK has made available a range of vaper coils that include mesh and regular coils. Each is designed for different grade purposes. With both types you can determine the best suit. Mesh type of coils are very much sought after in the market due to their fast and uniform heating. Regular coils allow for a much more basic but consistent vaping experience for simple sessions. https://www.vapeuniverse.co/blogs/news/smok-rpm-5-review?_pos=6&_sid=7f0d5bcad&_ss=r