These are RPM 2 coils for the Smok RPM 2 pods that fit any device that can take the SMOK RPM-2 coils, such as the Scar P3 and Scar P5 Kits as well as the new Nord-X Kit just to name a few. These coils will only fit RPM 2 pods and will not work in other style pods. The Smok RPM 2 0.16 coils are packed with flavour thanks to the unique mesh wire utilised and promise dense vapor production. They are to be used between 25w - 50w but are said to be best around 40w.