14mm (14/23) WPA Dynavap Glass Stem Full Color- Silver fume

14mm (14/23) WPA Dynavap Stem. comes with 2 additional o-rings (6x1.1mm) that are 0.1mm larger then the stock oring to ensure a secure fit. Stem will not work with helix tip  

*Some tips work best with one 6x1.1mm o-ring in the uppermost o-ring position that inserts inside the stem.