• Kits include 100 vials and 100 caps with pre-assembled septa VWR® Standard Opening Screw Thread Vials and Inserts Description Glass Patched Dimension (mm) Profile Total Volume Usable Volume Residual (µL) Cat. No. Pack of Case of 8-425 Screw Thread Vial Clear No 12x32 Flat Bottom 2.0mL 1.8mL . 170 66020-950 100 1000 Clear Yes 12x32 Flat