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

12-172 SCIENTIFIC GLASS 18MM BY 14MM DOWNSTEM STANDARD DIFFUSER CLEAR ASSORTED SIZES 5"

Glass-100 14.4mm/18.8mm Glass Bowl Male Glass Accessories

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

MFHX Handcrafted Glass items, replace bowl, male adapter, 14mm / 18mm (14mm, Blue)

SCIENTIFIC SUPPLIES, 12-289 BOWL STANDARD AMBER 18MM

SCIENTIFIC LAB EQUIPMENT 12-442, ASH HOLDER WITH BOWL CLEAR MALE 14MM

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

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