9mm 2ml Wide Opening Screw Vials-Quzhou Lab Technology . 9mm screw thread caps,septa,and vials are designed especially for use with lab vials supplier''s and other rotating or robotic arm samplers 2ml,12X32mm vials are manufactured of Clear type 1 Class A or Aer,Type 1 Class B borosilie glass and include a write-in patch for sample identifiion