Description General description Luer tips are offset from barrel center. The rigid PE plungers of these syringes are slightly oversized, creating a tight seal against the walls of the semi-flexible PP barrel, as well as providing an exceptionally smooth draw. Syringes have Luer tips, the SS needles have all PP Luer hubs. Needles and syringes are sterilized and individually packaged, with no contaminating lubricants added.