Package of 10ml clear headspace round bottom vials with 18mm magnetic screw caps (silver in color) and Silicone/PTFE Septa. Cap: Magnetic 18mm Screw Cap. Septa: Silicone (Transparent Blue)/PTFE (White), 45° shore A, 1.3mm, Vial Dimensions: 10mL, 46 x 22.5mm round bottom Package Size: 100/pk For use with HS-10, HS-20, AOC-5000, and AOC-6000.