Vials, screw top, amber glass (vial only) volume 2 mL, amber glass vial, thread for 10-425, pkg of 100 ea: 27273: Assembled screw cap with hole with PTFE/silicone septum black polypropylene hole cap, thread for 10-425, PTFE/silicone, septum thickness 1.5 mm, for use with 2 mL vial (large opening), pkg of 100 ea: 27300