Package of 1.5mL clear 1st hydrolytic class glass vials with red screw caps and septa. Vial Deminsions: Short Thread Vial, 12 x 32mm, 9mm opening. Cap: Red Polypropylene 9mm Short Screw Cap. Septa: Silicone (White)/PTFE (Red), 45° shore A, 1.3mm, Package Size: 500/pk