Insert for 2 mL standard opening vial, 4.6 mm I.D. volume 0.2 mL, glass (conical with polyspring), O.D. × H 5 mm × 30 mm, pkg of 00 ea. pricing. 27338. Self-centering support for 5 x 3 mm inserts Self-centering support for 5 x 32 mm insert, for use with conical insert (Cat. No. 24703 and 24704), pkg of 500 ea. pricing.