Pioneer V1.5 RTA · Born out of Pioneer MTL RTA. · DL/RDL/MTL. · 22mm diameter. · Easy rebuilding. · 3.2ml capacity. · Slide-open top cap with locking system. · Removable evaporation space compressor. · Two different chimneys for flavor adjustment. · Tobacco Chimney - designed by Italian reviewers and Bruce, super good for tobacco juices, also great for direct lung vaping. · Airflow pins - 1.0/1.2/1.5/2.0/2.9 (all included). · "Pig nose positive post" - equivalent to 4mm pin's airflow. · Flavor features - biased towards sharp and strong in most cases. May enhance the flavors of tobacco and fruits.