Worldwide Glass Resources is the premier global source for Chromatography vial solutions serving the scientific community and a producer of Headspace Vials, 9mm vials and 11mm crimp vials. Finish Diagram Description Shell Vial Finish Shell Vial Finish The Shell Vial Finish is also called a Fire-Polished Neck, where the opening of the vial has the same dimensions as the walls of the vials.