Convenient Pack: includes a pack of 10 rubber stoppers, providing ample supply for laboratory needs
Precise Fit: designed to fit 14/20 outer joint lab glassware, with an inner diameter of 19mm (19#), ensuring compatibility and secure sealing
Quality Material: crafted from premium rubber material, ensuring durability and reusability; note: it's recommended to avoid cross-use for optimal performance
Well-Crafted Design: each stopper is meticulously shaped, accurately sized, and boasts a smooth surface, guaranteeing reliable and long-lasting use in laboratory applications
Warranty: in case you receive a defective or damaged item, please reach out to us; we will assist you until the issue is resolved to your satisfaction