Qorpak GLC-00978 Borosilicate Glass 1.85mL Clear Type I Screw Thread Vial, with Green Thermoset F217 and PTFE Lined Cap Attached, 11.65mm Diameter x 35mm Height (Case of 144) Clear screw thread vials offer maximum visibility Product allows users to properly secure closures at the correct degree of torque to ensure a proper seal Providing exceptional resistance to heat shock and chemical leaching Attached green thermoset (phenolic) are known for providing the widest range of chemical compatibility and for being the most temperature tolerant of plastic closures Measures 12 millimeters diameter by 35 millimeters height