Vial, crimp top, amber, write-on spot, certified, 2 mL, 1,000/pk. Vial size: 12 x 32 mm (11 mm cap) crimp seals | Sigma-Aldrich white polypropylene cap (15mm center hole), tan PTFE/silicone, thickness 3.2 mm, 24-400 thread, for use with 20 or 40 mL vial, pkg of 1000 ea Crimp top vial