Vials, screw top, amber glass (vial only) volume 2 mL, amber glass vial, thread for 10-425, pkg of 100 ea 27407 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 27408 Insert for shell