9mm Screw Short Neck Autosampler Vial--aijiren HPLC Vials 300uL Micro-Insert, 31*6mm Clear, Flat Bottom, Suits for 9mm Vials: 250uL Conical Micro-Insert, 31*5.7mm, Suits for 9mm Vials: 250uL Micro-Insert with Mandrel Interior & Polymer Feet, 29*5.7mm