Precision Sampling GC111, GC 311, LC 241-60 2.0 mL, 9 mm Short-Cap, Screw-Thread Vials, 12 x 32 mm 40% larger opening than other vials. Waters HPLC Vial - Aijiren. Short screw Thread ND9 vials(11.6*32mm) for GC and HPLC. Vials have a 40% larger opening for easier sample preparation. Features. PERFECT MATCH