Trigger is Unique's take on the classic three post neutral RDA. While bringing you all the pluses and none of the negatives Trigger combines functionality class and style once again. With large holes and top in threading combined with Allen key heads you are able to put in your coil with ease, tighten them down without stripping. Flat bottom bolts as not to cut off your coil as you tighten. A positive post that will not turn over time to keep your beautiful coil straight. Unique has integrated it's logo and the airflow together. Without an obvious airflow system you can still reach any level of flow you may need.