This thing is a beast, with it's large diameter post holes and it's deep juice channel you can get some major clouds with the Lethal RDA.  It also has unique, overhead airflow which will minimize leaking as the airflow is above the coils in the coloured ring.  This kit comes with 4 coloured rings and a drip tip adapter to switch from the stainless steel chuff cap that is covered with a delrin cap to keep it cool.