Made from 3 pieces :
PHASE 1] The threaded base in brushed SS316L, with no terminal pieces to reach each distance/height of the chimney of your(s) RBA. [4.444mm Ø]
With (2) black NBR soft orings that grips and keeps perfectly in place the side base.
PHASE 3] The mouthpiece, in this wave (because there will be more and more waves of this) TSUNAMI - TSNM is made of a beautiful " OCEAN BLUE RESIN ", it has a conical internal wall that prevents the liquid spit back to your mouth and is that thick that it will never became hot even in the most aggressive set-ups.
NTSU | Engineered to satisfy.