These joints are sold by the end.



Precision Ground Joints! A step up from China imported joints, but still affordable with quality you can trust. 14/20 male socket joint, 5.5" in length. When ordering ground glass joints you must consider measurements (X/Y=) Where X is the Top Outer Diameter, and Y is the Length of the Grind. (So 14/20 would be a Top Outer Diameter of 14mm and a grind length of 20mm.)