Vial 0.5 Ml at 20ml headspace vials online Wide-opening 2 ml,12 x 32 mm vial Superior 33 expansion borosilie glass Meets extremely tight tolerances I-D vial with write-on patch measures 0.5,1.0 and 1.5 ml 1230W33 Convenience Kit contains 100 Target Snap-It Clear Vials with Clear Seals with Red PTFE