Description Our silicone threaded flip-top stopper is designed to provide a secure and leak-proof seal for saline bottles and laboratory reagent bottles. The stopper's flexible silicone material ensures a tight fit, preventing spills. Its user-friendly design makes it easy to insert and remove, making it an essential tool for any laboratory setting. Features -Color:White -Material:Silicone -Size:4.00X2.70X2.00cm/1.57X1.06X0.79in Inner diameter:24mm -Material: made from silicone, ensuring safety and reliability for all laboratory applications -Threaded design: the threaded design prevents the saline bottle stopper from loosening, providing a secure fit -Seal: features a seal to keep the contents of reagent bottles safe and secure -Ease of use: simple and easy to use, making laboratory operations efficient -Versatility: suitable for reagent bottles of various capacities, offering flexibility in laboratory settingsPackage list: 10 x Test Tubes Bungs Stopper