Vials use 8mm septa and screw-caps Compare this item Certified Autosampler Vial Kits, Certified 2.0 mL Screw-Thread Vials Restek Certificates enclosed with each kit Vials of clear or amber borosilicate glass with ID marking spots Closures with pre-inserted septa Each kit sealed for integrity Related Products: 2 Ml Autosampler Vials