Pre-slit, Red PTFE/white silicone septa + snap cap with hole, for 2ml snap top vial: 100: Ask for quote: 4ml, 13-425 Sample Vials: LBSV014CRS: Red PTFE/White silicone septa + Black cap with hole, for 4ml screw top vial: 100: Ask for quote: LBSV104CSS: Red PTFE/White silicone septa + Black cap without hole, for 4ml screw top vial: 100: Ask for quote