Ground Joint "Gong" Down Stem
Flush Mount Ground Joint "GonG" Down Stem fits VWT PerK, VWT BuB, current model VWT Pro-Models and can be used to upgrade earlier VWT Pro-Models or any water tool that accepts an 18.8mm down stem joint. It will accept our VCBS_14.4mm (VHW) or VCB_14.4mm (HG). This is a flush mount design that looks very clean and doesn't protrude as far as many ground joint style down stems. Features four sets of four outlet diffuser jets and one central outlet jet for the perfect amount of vacuum resistance and silky smooth vapor.