Pink colored Luer Lock hub with a 20-Gauge blunt tip. The Inside Diameter is 0.024" (0.610mm) and the Outside Diameter is 0.036" (0.914mm). 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.