Green colored Luer Lock hub with a 18 gauge blunt tip. The Inside Diameter is 0.033” (0.840 mm) and the Outside Diameter is 0.050” (1.270 mm). Our 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. Available in boxes of 50 or bags of 1000.