Secure Seal: This solid penny head glass stopper, meticulously crafted from high-quality borosilicate glass, ensures an airtight and secure fit for your laboratory glassware.
Durable Design: Built to last, this stopper boasts exceptional thermal resistance and chemical compatibility, ideal for various laboratory applications.
Easy Grip: The flat, rounded penny head design provides a comfortable and secure grip for effortless insertion and removal.
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