28-B (For Infusion Bottle)Plunger Diameter: 18.0¡À0.2mmFlange Diameter: 26.6¡À0.3mmFlange Thickness: 3.8¡À0.3mmTotal Height: 11.8¡À0.4mmSterility: Washed or pre-sterilizedPacking: In bacteria-free bag or double wrapped in tyvek bag