Choose from various vial types, colors, sizes, cap liners, and caps to meet your individual application. Headspace vial, screw top, rounded bottom (vial only) volume Headspace vial, screw top, rounded bottom (vial only) volume 20 mL, amber glass vial, thread for 18, O.D. × H 22.5 mm × 75.5 mm, pkg of 100 ea;