Vials Only, Thread Size 9-425 2 ml Vial, screw top, clear, write-on spot, 2ml Screw cap vials accept screw caps and septa. These vials form an excellent seal and are ideal for most applications. Vial size: 12 x 32 mm (12 mm cap) Closure Type: Screw Neck Material: Clear Glass Equivalent to Agilent 5182-0715, 5190-9100, Waters 186000273 1000/pk Caps Sold Separately