Brown colored Luer Lock hub with a 15-Gauge blunt tip. The Inside Diameter is 0.054" (1.372mm) and the Outside Diameter is 0.072" (1.829mm). Jensen Global NT Series Premium polished tips feature a polypropylene plastic double-helix hub with a UV-bonded stainless steel cannula. The burr-free tip design allows for precise dispensing with no residuals.