Our test tube sealing stoppers are designed to meet the rigorous demands of laboratory work. These solid stoppers are suitable for sealing test tubes and bottles, ensuring that your samples remain secure. Whether you're conducting experiments or storing samples, these stoppers provide a reliable and convenient solution for all your lab sealing needs. Features -Color:Transparent -Material:Reusable plastic -Size:2.00X1.50X1.50cm/0.79X0.59X0.59in -Fit for 13mm tube mouth - plastic: made from robust plastic these stoppers are built to last and resist deformation, making them ideal for longterm use in laboratories -Easy to use: the winged design makes sure easy insertion and removal, preventing the stoppers from slipping out and reducing the risk of accidental spills -Versatile fit: designed to fit various test tubes, these stoppers are suitable for use in laboratories hospitals and other scientific settings -Leakproof: provides a tight and secure seal to prevent any liquid leakage, ensuring the reliability and accuracy of your experimental results -Efficient management: helps in the systematic organization of test tubes, making it easier to manage and access samples thus boosting overall productivity Package list: test tube stoppers