Manufacturer: Chemglass Life Sciences CV51861232. Kit, Preassembled Vial, Autosampler HPLC Vial, 0.5mL, RAM, Plastic, PP, Limited Volume, Large Opening, 9mm Thread, 12 x 32mm, with 0.30mL Fused Insert, Blue Bonded Closure, Open Hole, .040" PTFE/Silicone Septa with Slit. These convenience packs come with 100 bonded closures and vials packed