Vial Size: 20ml (23 x 75mm) Top Style: Crimp Top Cap/Seal Size: 20 mm Vial Material: Clear Glass Top Bottom Style: Bevel Top/Flat Bottom Similar to: 392604600 Qty/Pk: 100 • Lot to lot quality assurance with lot number coding • Proven performance on all major headspace instruments • Type 1 borosilicate glass • Caps have 9mm opening