Pre-slit White PTFE/Red Silicone Septa, 11mm Crimp-top Aluminum Cap, 5.5mm Centre Hole Back Catalog number: PL30A-016 Availability: In the manufacturer's stock Price on request - + Recommended 5182-0543 Vial,crimp,2ml,clr,WrtOn,cert,100PK 24,05 € PL30A-004 Aluminium crimp cap, 11mm, PTFE/red Rubber, pk/100 4,79 € 920514-12 Convenience Pack - P/N 32011-1232 and 5140-11 39,58 €