Closures, 9 mm thread, for Certified Vials - (4) Certified Vial Kits with Pico Pure Plus+ Caps for LC/MS - (4) Certified Vials with fused-in inserts, 0.3 mL - (4) Certified Glass Inserts - (4) Certified screw thread vials, 10-425 thread - (2) Certified Kits, snap ring