Unassembled Vial Kit, Screw-Thread. Clear borosilicate glass. Black, polypropylene, open-top, 8-425 GPI thread finish cap is preassembled with red PTFE/white silicone septa. Caps and septa packed in a resealable plastic bag. Vials come in a 100-vial storage tray. Capacity: 2ml. ODxLength: 12x32mm.