Ks-Tek 5pcs GL45 Screw Caps with Pouring Ring for Laboratory Glass Bottles, Polypropylene, 45 mm (Blue)
- Screw cap with 2 silicone plugs, fit GL 45 neck size bottle.
- Cap Material: Polypropylene(PP) and PTFE insert, autoclavable.
- Silicone adapter is elastic and seals both bottle and tubings tight.