Organic chemistry glassware. This short stem take-off adapter is bent with a drip tip. It can be used to connect a condenser to a flask for vacuum distillation. The adapter is high-quality borosilicate glass. Instructions and illustrations for setting up organic glassware for a variety of procedures, such as reflux and simple vs. fractional distillation, are available in the PDF above under Resources.
The connection accepts an 8 mm serrated hose and fits 8 mm I.D. rubber tubing. Both the top and bottom joints are 14/20.