2mL Titeseal Clear Autosampler Shell Vials with White Polyethylene Plug Style Needle Closures. Closures are not attached. Economic alternative to aluminum seal, crimp/snap-ring, and screw thread finishes. Shell vials are made from Type 1, Class A, KG-33 borosilicate glass. Capacity: 2mL. O.D. x Length: 12 x 31mm. Kimble #: 60831D-1231.