Vials, 10mL Round Bottom Headspace Vial Kit w/20mm Magn Crimp Cap & Silicone/PTFE Septa, 100/pk. 220-97331-79. Vials. Vials, 18mm Magnetic Universal Screw Cap & Septa Only, Center Hole; Silicone/PTFE, 100/pk. 220-97331-04. Vials. Vials, 200µL TPX Vial w/ Glass Micro Insert, 12 x 32mm, 9mm opening, 100/pk.