2.Shell vials are kitted unassembled with the appropriate closures or with closures. Features. Suitable for microscale experiments. Product Show. 1mL Shell Vial, Clear, 8mm PE-Plug, Soft, Without Insertion 8.2*40mm. 1mL Shell Vial, Clear, 8mm PE-Plug, Soft, Without Insertion 8.2*40mm.