2ml, 9mm Screw neck ND9 vials - GC Column, HPLC . Model : 2ml wide opening short screw-thread vial. Volume : 2ml (standard volume) Specification : 12 x 32mm. Package : 100/pk. Product Features : Specification of the bottle is 12 x 32mm. The precise processing of bottleneck to enable mechanical arm to operate efficiently.