Polypropylene Cap with white PTFE/Red Silicone Septa. Center hole Diameter   5.5 mm. Suitable for 9mm short thread vial (BS-01-JYP/BS-02-JYP). Pre-slit White PTFE Screw-Thread Cap .

Features:

1. Polypropylene Cap with white PTFE/Red Silicone Septa   
2. Center hole Diameter  : 5.5 mm    
3. Suitable for 9mm short thread vial (BS-01-JYP/BS-02-JYP)  
4. Pre-slit White PTFE Screw-Thread Cap