Fits 5 sizes of tubing and can connect the same size tubing on all three ends, or will act as a reducer for any combination within the range. The inside diameter increases with notch size when needed length is cut off for unrestricted flow. These molded polypropylene connectors are steam autoclavable at 121°C (250°F). 118mm (4-5/8") long by 67mm (2-5/8") per branch. Ring diameters are 14, 12.5, 11, 9.5 and 7.9mm (9/16, 1/2, 7/16, 3/8 and 5/16").