19/38 Male GG Joint

This item is sold by each end. These Ground Glass Joints are manufactured with SIMAX Borosilicate glass, ensuring our customers concise, quality work with every order. Male Ground Joints are measured the Same way as Female Ground Glass Joints. (X/Y=) Where X is the Top Outer Diameter, and Y is the Length of the Grind. (So 19/38 would be a Top Outer Diameter of 19mm and a grind length of 38mm)