12-957 SCIENTIFIC GLASS 18MM BY 14MM DOWNSTEM STANDARD DIFFUSER CLEAR ASSORTED SIZES 3.5"

12-539 SCIENTIFIC GLASS 18MM BY 14MM DOWNSTEM STANDARD DIFFUSER CLEAR ASSORTED SIZES 4"

12-168 SCIENTIFIC LAB GLASSWARE STEM 18MM BY 14MM STEM STANDARD DIFFUSER CLEAR 3"

12-162 SCIENTIFIC GLASS 18MM BY 18MM DOWNSTEM STANDARD DIFFUSER CLEAR ASSORTED SIZES 3"

Glass Bowl Glass Herb Holder with Honeycomb Screen (14mm male, Clear)

12-290 SCIENTIFIC GLASS 18MM BY 14MM DOWNSTEM STANDARD DIFFUSER CLEAR ASSORTED SIZES 6"

14mm-18mm Glass Bushing Adapter

12-1484 SCIENTIFIC GLASS 18MM BY 18MM DOWNSTEM STANDARD DIFFUSER CLEAR ASSORTED SIZES 2.5"

12-173 SCIENTIFIC GLASS 18MM BY 14MM DOWNSTEM STANDARD DIFFUSER CLEAR ASSORTED SIZES 5.5"

3.5" Hand Blown Glass Bowl Funnel Downstem Slider Set With O-Ring Stem Male Female