HeyWin Lab Rubber Stopper,(6 Pack) 5#,White Solid Stoppers are Used for Sealing Balloon Bottles、Conical Flask Etc

Size 5#: 28X29X22 mm Solid Rubber Stoppers alsod used as a bung for water tank、glass carboy etc,exhibit excellent resilience and retain pliability for a long time Coming with an extra box for storing the rubber plug to avoid loss Please read the dimension description image carefully before making a decision (might have 1-2 mm measurement error),and please note these rubber stoppers are not food grade HeyWin Team always adhere to the principle of customer first, and serve with heart. If you encounter problems with the product, please contact us immediately, we will give you a satisfactory answer within 24 hours