Convenience Kit, 20mm Headspace Crimp Vial, Beveled Edge, Round Bottom, Pressure Release Crimp Cap, 7.5mm hole: Diameter (Metric) Inner: 23 mm: Material: Glass: Volume (Metric) 20 mL: Material (Septa) PTFE/Silicone: Base Style: Round Bottom: Vial Type: 20 mm Headspace Crimp Vial Convenience Kit: Closure Type: Crimp Cap (Open Top, 7.5 mm hole, Pressure Release) Type