20mm Crimp-Top Headspace CTC Vial ND20 – China 1 4).10/20mL Clear /Amber Precision Crimp Headspace Vial, Flat/Round Bottom, 22.5*46mm . 5).PTFE/Silicone Septa Φ20*3mm Temperature Resistant -60℃-200℃ with 9mm thread. 6).Crimp-top Aluminum Cap, 10mm Centre Hole Φ20m 10mm autosampler vial sep