Chamber reducer for intense flavor;
Simply remove the airflow control screw and assemble into the chamber.
Compatiable with original Flash e vapor v4/v4.5s/v4.5s+
(We do not guarantee the compabitility of other fev atomizers due to tolerance, it only works for 1:1 fev)
1* ULTON Peek Chamber Reducer for Fev v4.5S+ Build Deck