The M Pro 2 By Freemax is an updated successor of the reputable M Pro tank. It is still slide-to-open top-fill design but is added with 3 steel balls to increase the friction when slide to open the top cap. A new series of coils comes with the tank - 904L M1, M2, M3, and M4 mesh coils. The coil tech is also updated to FM COILTECH4.0 with military-grade SS904L mesh material and tea fiber cotton for more stable vaping experience and refreshing flavor. What's more, the tank is newly designed with a stunning diamond glass tube together with resin colors, integrated with beauty and durability.