Clear 9ml Autosampler Vials and caps are easy to use and require no special tools. The unique thread design provides a consistently secure seal, preventing evaporation. Product Name: Clear 9ml Autosampler Vials Vial Dimension: 12x32mm Vial Thread: Screw Cap: Plastic open/solid cap Septa: Non-slit, Pre-Slit, PTFE/Silicone Vial Volume: 1.5-2.0ml