29444-U. volume 0.2 mL (200 Å3), clear glass insert (with plastic bottom spring), O.D. × H 5 mm × 36 mm, pkg of 100 ea. Pricing. Match Criteria: Product Name, Keyword. Insert for 2 mL standard opening vial, 4.6 mm I.D. Insert for 2 mL standard opening vial, 4.6 mm I.D.