19/22 Blue Female GG Joint (Hvy)

This item is sold by each end. These Ground Glass Joints have a 4mm wall thickness. 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 10/18 would be a Top Outer Diameter of 10mm and a grind length of 18mm)