18MM by 14MM STEM 4"Standard Diffuser Clear (2 Pack)
SCIENTIFIC GLASSWARE STEMS 12-172 18MM BY 14MM STEM STANDARD DIFFUSER CLEAR 5"
TORRIX Glass Downstem 19mm to 14mm Down Tube 3 inch Avaliable (3 inch)
"U" Glass Connecting Adapter All 14mm
Skull Crown Glass Herb Holder Smoking Bowl (14mm Male Clear Yellow Crown)
Jianuo 18mm by 14mm Stem Clear Scientic Glass Tube Adapter (3 inch)
14MM Small Glass