Inserts for 2 mL large opening vials, 6.0 mm I.D., volume 0.25 mL, glass (with glass flange), for use with Step Vials, pkg of 100 ea. pricing. 27414. Screw cap (open-top), polypropylene, white polypropylene hole cap, thread for 10-425, for use with 2 mL large opening vial (6.0 mm), pkg of 100 ea.