The Wotofo Profile M RTA is the smallest but sophisticated Mesh RTA. It can hold 3.1ml (with straight tube) and 4.0ml (with bubble tube) e-juice capacity. It can retain the original flavor of your e-liquid with a short size. The top airflow system makes the air distribution accurate. In addition, Profile M RTA is made to be leak-free, so you dont need to worry about the leakage. Profile M RTA is also compatible with all the original Profile RDA mesh coils. Now a smaller nexMESH Clapton S 0.15ohm Coil is added and you can also use this new coil on your Profile RDA. Utilizing the profile mesh clamping method, it is simple to build and easy to use. Product Information Height: 27.8mm (without drip tip & 510 pin) Deck Diameter: 24.5mm Drip Tip: 810 resin drip tip E-liquid Capacity: 3.1ml (4.0ml bubble tube included) Filling Method: Top filling Airflow Type: Top airflow Coil Type: Mesh coil Insulator Material: German PEEK Threading: 510 thread 5 Colors available on 3FVAPE. Black,SS, Blue Metal,Gold, Blue, Rainbow. This RTA is the newest Wotofo Product the end of this year. More details you may check >> https://www.3fvape.com/47610-.html