Wotofo Profile M RTA is one of the most compact Mesh RTA on the market. Profile M RTA features push top filling design and adjustable top airflow with honeycomb chamber ceiling for best flavor. Wotofo Profile M provides mesh deck with clamps, easy to install. Profile M has 3.1ml straght glass tube and replacement 4ml PCTG bubble tube. Wotofo Profile M is compatible with all the original Profile RDA mesh coils, while new Clapton mesh coil 0.15 ohm (A1 + Ni80) fits Profile RDA.